[INFO] cloning repository https://github.com/mozamimy/repro-sass-sys-build-failure
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mozamimy/repro-sass-sys-build-failure" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozamimy%2Frepro-sass-sys-build-failure", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozamimy%2Frepro-sass-sys-build-failure'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e609e9dfa9f40f192092820fa4ea327827543aff
[INFO] testing mozamimy/repro-sass-sys-build-failure against beta-2025-10-28 for beta-1.92-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozamimy%2Frepro-sass-sys-build-failure" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mozamimy/repro-sass-sys-build-failure
[INFO] finished tweaking git repo https://github.com/mozamimy/repro-sass-sys-build-failure
[INFO] tweaked toml for git repo https://github.com/mozamimy/repro-sass-sys-build-failure written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mozamimy/repro-sass-sys-build-failure on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mozamimy/repro-sass-sys-build-failure already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2328710a63091eeb911e85fac6f950b163faa126be60f8e52277711254c5eb25
[INFO] running `Command { std: "docker" "start" "-a" "2328710a63091eeb911e85fac6f950b163faa126be60f8e52277711254c5eb25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2328710a63091eeb911e85fac6f950b163faa126be60f8e52277711254c5eb25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2328710a63091eeb911e85fac6f950b163faa126be60f8e52277711254c5eb25", kill_on_drop: false }`
[INFO] [stdout] 2328710a63091eeb911e85fac6f950b163faa126be60f8e52277711254c5eb25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c2dff8fa28a0a95a52e5200dcf2948d043eaa55918b01c858a787a64c584279
[INFO] running `Command { std: "docker" "start" "-a" "4c2dff8fa28a0a95a52e5200dcf2948d043eaa55918b01c858a787a64c584279", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling sass-sys v0.4.8 (https://github.com/mozamimy/sass-rs.git?branch=debug-cpu-num#c6dd9551)
[INFO] [stderr] error: failed to run custom build command for `sass-sys v0.4.8 (https://github.com/mozamimy/sass-rs.git?branch=debug-cpu-num#c6dd9551)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/sass-sys-1f368009fa2da33b/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   DEBUG: jobs = 8
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (98) panicked at /opt/rustwide/cargo-home/git/checkouts/sass-rs-0ea23b9cf188747c/c6dd955/sass-sys/build.rs:83:9:
[INFO] [stderr]   Build error:
[INFO] [stderr]   STDERR:In file included from src/ast.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   In file included from src/color_maps.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/context.cpp:9:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/listize.hpp:7,
[INFO] [stderr]                    from src/functions.hpp:4,
[INFO] [stderr]                    from src/functions.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/node.hpp:7,
[INFO] [stderr]                    from src/node.cpp:4:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   In file included from src/ast.cpp:5:
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/ast_fwd_decl.cpp:1:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   In file included from src/expand.hpp:7,
[INFO] [stderr]                    from src/context.cpp:19:
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   In file included from src/extend.hpp:9,
[INFO] [stderr]                    from src/functions.cpp:9:
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/environment.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/functions.cpp: In function 'void Sass::Functions::handle_utf8_error(const Sass::ParserState&, Sass::Backtraces)':
[INFO] [stderr]   src/functions.cpp:110:20: warning: catching polymorphic type 'class utf8::invalid_code_point' by value [-Wcatch-value=]
[INFO] [stderr]     110 |       catch (utf8::invalid_code_point) {
[INFO] [stderr]         |                    ^~~~~~~~~~~~~~~~~~
[INFO] [stderr]   src/functions.cpp:114:20: warning: catching polymorphic type 'class utf8::not_enough_room' by value [-Wcatch-value=]
[INFO] [stderr]     114 |       catch (utf8::not_enough_room) {
[INFO] [stderr]         |                    ^~~~~~~~~~~~~~~
[INFO] [stderr]   src/functions.cpp:118:20: warning: catching polymorphic type 'class utf8::invalid_utf8' by value [-Wcatch-value=]
[INFO] [stderr]     118 |       catch (utf8::invalid_utf8) {
[INFO] [stderr]         |                    ^~~~~~~~~~~~
[INFO] [stderr]   In file included from src/bind.cpp:3:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   In file included from src/expand.hpp:7,
[INFO] [stderr]                    from src/bind.cpp:5:
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   In file included from src/listize.hpp:7,
[INFO] [stderr]                    from src/functions.hpp:4,
[INFO] [stderr]                    from src/sass_functions.hpp:6,
[INFO] [stderr]                    from src/file.cpp:23:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/json.cpp: In function 'char* json_encode_string(const char*)':
[INFO] [stderr]   src/json.cpp:405:15: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
[INFO] [stderr]     405 |   catch (std::exception) {
[INFO] [stderr]         |               ^~~~~~~~~
[INFO] [stderr]   src/json.cpp: In function 'char* json_stringify(const JsonNode*, const char*)':
[INFO] [stderr]   src/json.cpp:424:15: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
[INFO] [stderr]     424 |   catch (std::exception) {
[INFO] [stderr]         |               ^~~~~~~~~
[INFO] [stderr]   In file included from src/util.cpp:3:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/values.hpp:4,
[INFO] [stderr]                    from src/values.cpp:3:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/parser.hpp:7,
[INFO] [stderr]                    from src/parser.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/expand.cpp:5:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/eval.hpp:4,
[INFO] [stderr]                    from src/eval.cpp:10:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   In file included from src/expand.hpp:7,
[INFO] [stderr]                    from src/expand.cpp:6:
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   In file included from src/listize.hpp:7,
[INFO] [stderr]                    from src/listize.cpp:6:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/cssize.hpp:4,
[INFO] [stderr]                    from src/cssize.cpp:6:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/extend.hpp:7,
[INFO] [stderr]                    from src/extend.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   In file included from src/inspect.hpp:5,
[INFO] [stderr]                    from src/output.hpp:8,
[INFO] [stderr]                    from src/context.hpp:19,
[INFO] [stderr]                    from src/ast.hpp:54:
[INFO] [stderr]   src/operation.hpp:161:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Pseudo_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Pseudo_Selector_Ptr = Sass::Pseudo_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     161 |     T operator()(Pseudo_Selector_Ptr x)        { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   In file included from src/extend.hpp:9:
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:160:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Attribute_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Attribute_Selector_Ptr = Sass::Attribute_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     160 |     T operator()(Attribute_Selector_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:159:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Id_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Id_Selector_Ptr = Sass::Id_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     159 |     T operator()(Id_Selector_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:158:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Class_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Class_Selector_Ptr = Sass::Class_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     158 |     T operator()(Class_Selector_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:157:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Element_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Element_Selector_Ptr = Sass::Element_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     157 |     T operator()(Element_Selector_Ptr x)       { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:156:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Placeholder_Selector_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Placeholder_Selector_Ptr = Sass::Placeholder_Selector*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     156 |     T operator()(Placeholder_Selector_Ptr x)   { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:151:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameters_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameters_Ptr = Sass::Parameters*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     151 |     T operator()(Parameters_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:150:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Parameter_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Parameter_Ptr = Sass::Parameter*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     150 |     T operator()(Parameter_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:139:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Condition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Condition_Ptr = Sass::Supports_Condition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     139 |     T operator()(Supports_Condition_Ptr x)     { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:131:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Error_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Error_Ptr = Sass::Custom_Error*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     131 |     T operator()(Custom_Error_Ptr x)           { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:130:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Custom_Warning_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Custom_Warning_Ptr = Sass::Custom_Warning*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     130 |     T operator()(Custom_Warning_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:125:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Function_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Function_Ptr = Sass::Function*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     125 |     T operator()(Function_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:121:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Mixin_Call_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Mixin_Call_Ptr = Sass::Mixin_Call*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     121 |     T operator()(Mixin_Call_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:120:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Definition_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Definition_Ptr = Sass::Definition*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     120 |     T operator()(Definition_Ptr x)             { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:119:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Extension_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Extension_Ptr = Sass::Extension*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     119 |     T operator()(Extension_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:118:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Content_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Content_Ptr = Sass::Content*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     118 |     T operator()(Content_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:108:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Stub_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Stub_Ptr = Sass::Import_Stub*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     108 |     T operator()(Import_Stub_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:107:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Import_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Import_Ptr = Sass::Import*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     107 |     T operator()(Import_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:105:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Declaration_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Declaration_Ptr = Sass::Declaration*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     105 |     T operator()(Declaration_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:104:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Keyframe_Rule_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Keyframe_Rule_Ptr = Sass::Keyframe_Rule*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     104 |     T operator()(Keyframe_Rule_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:103:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Directive_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Directive_Ptr = Sass::Directive*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     103 |     T operator()(Directive_Ptr x)              { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:102:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::At_Root_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::At_Root_Block_Ptr = Sass::At_Root_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     102 |     T operator()(At_Root_Block_Ptr x)          { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:101:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Media_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Media_Block_Ptr = Sass::Media_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     101 |     T operator()(Media_Block_Ptr x)            { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:100:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Supports_Block_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Supports_Block_Ptr = Sass::Supports_Block*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     100 |     T operator()(Supports_Block_Ptr x)         { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:99:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Trace_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Trace_Ptr = Sass::Trace*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      99 |     T operator()(Trace_Ptr x)                  { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:98:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Bubble_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Bubble_Ptr = Sass::Bubble*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      98 |     T operator()(Bubble_Ptr x)                 { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:97:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::Ruleset_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::Ruleset_Ptr = Sass::Ruleset*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      97 |     T operator()(Ruleset_Ptr x)                { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   src/operation.hpp:94:7: warning: 'T Sass::Operation_CRTP<T, D>::operator()(Sass::AST_Node_Ptr) [with T = Sass::Expression*; D = Sass::Eval; Sass::AST_Node_Ptr = Sass::AST_Node*]' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]      94 |     T operator()(AST_Node_Ptr x)               { return static_cast<D*>(this)->fallback(x); }
[INFO] [stderr]         |       ^~~~~~~~
[INFO] [stderr]   src/eval.hpp:89:20: note:   by 'Sass::Eval::operator()'
[INFO] [stderr]      89 |     Expression_Ptr operator()(Parent_Selector_Ptr);
[INFO] [stderr]         |                    ^~~~~~~~
[INFO] [stderr]   In file included from src/output.cpp:2:
[INFO] [stderr]   src/ast.hpp: In member function 'virtual size_t Sass::Number::hash()':
[INFO] [stderr]   src/ast.hpp:1614:25: warning: loop variable 'numerator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1614:25: note: use reference type to prevent copying
[INFO] [stderr]    1614 |         for (const auto numerator : numerators)
[INFO] [stderr]         |                         ^~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp:1616:25: warning: loop variable 'denominator' creates a copy from type 'const std::__cxx11::basic_string<char>' [-Wrange-loop-construct]
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]   src/ast.hpp:1616:25: note: use reference type to prevent copying
[INFO] [stderr]    1616 |         for (const auto denominator : denominators)
[INFO] [stderr]         |                         ^~~~~~~~~~~
[INFO] [stderr]         |                         &
[INFO] [stderr]   src/ast.hpp: At global scope:
[INFO] [stderr]   src/ast.hpp:217:18: warning: 'virtual bool Sass::Expression::operator==(const Sass::Expression&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]     217 |     virtual bool operator== (const Expression& rhs) const { return false; }
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2296:18: note:   by 'virtual bool Sass::Selector::operator==(const Sass::Selector&) const'
[INFO] [stderr]    2296 |     virtual bool operator==(const Selector& rhs) const = 0;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2512:18: note:   by 'Sass::Element_Selector::operator=='
[INFO] [stderr]    2512 |     virtual bool operator==(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2514:18: note:   by 'Sass::Element_Selector::operator<'
[INFO] [stderr]    2514 |     virtual bool operator<(const Element_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2591:18: note:   by 'Sass::Attribute_Selector::operator=='
[INFO] [stderr]    2591 |     virtual bool operator==(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2593:18: note:   by 'Sass::Attribute_Selector::operator<'
[INFO] [stderr]    2593 |     virtual bool operator<(const Attribute_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2652:18: note:   by 'Sass::Pseudo_Selector::operator=='
[INFO] [stderr]    2652 |     virtual bool operator==(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2654:18: note:   by 'Sass::Pseudo_Selector::operator<'
[INFO] [stderr]    2654 |     virtual bool operator<(const Pseudo_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2429:18: warning: 'virtual bool Sass::Simple_Selector::operator==(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2429 |     virtual bool operator==(const Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2681:18: note:   by 'Sass::Wrapped_Selector::operator=='
[INFO] [stderr]    2681 |     virtual bool operator==(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2433:10: warning: 'virtual bool Sass::Simple_Selector::operator<(const Sass::Selector&) const' was hidden [-Woverloaded-virtual=]
[INFO] [stderr]    2433 |     bool operator<(const Selector& rhs) const;
[INFO] [stderr]         |          ^~~~~~~~
[INFO] [stderr]   src/ast.hpp:2683:18: note:   by 'Sass::Wrapped_Selector::operator<'
[INFO] [stderr]    2683 |     virtual bool operator<(const Wrapped_Selector& rhs) const;
[INFO] [stderr]         |                  ^~~~~~~~
[INFO] [stderr]   g++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr]   compilation terminated.
[INFO] [stderr]   make: *** [Makefile:249: src/functions.o] Error 1
[INFO] [stderr]   make: *** Waiting for unfinished jobs....
[INFO] [stderr] 
[INFO] [stderr]   STDOUT:mkdir lib
[INFO] [stderr]   cc -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/cencode.o src/cencode.c
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/ast.o src/ast.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/node.o src/node.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/context.o src/context.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/constants.o src/constants.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/functions.o src/functions.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/color_maps.o src/color_maps.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/environment.o src/environment.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/ast_fwd_decl.o src/ast_fwd_decl.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/bind.o src/bind.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/file.o src/file.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/util.o src/util.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/json.o src/json.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/units.o src/units.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/values.o src/values.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/plugins.o src/plugins.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/position.o src/position.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/lexer.o src/lexer.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/parser.o src/parser.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/prelexer.o src/prelexer.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/eval.o src/eval.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/expand.o src/expand.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/listize.o src/listize.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/cssize.o src/cssize.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/extend.o src/extend.cpp
[INFO] [stderr]   g++ -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-6ca7deb1e7f9330d/out/build/include -fPIC -fPIC -c -o src/output.o src/output.cpp
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x632055dfaaf2 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x632055dfaaf2 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x632055dfaaf2 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x632055dfaaf2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h47627beda0767f4c
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x632055e0a43f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x632055e0a43f - core::fmt::write::h8a63064c67176fd8
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x632055dcc1d3 - std::io::default_write_fmt::hc257f38f86d39af6
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x632055dcc1d3 - std::io::Write::write_fmt::h5e9b646cef91150b
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x632055dd6f52 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x632055dd91bc - std::panicking::default_hook::{{closure}}::h23e0299d4738b766
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x632055dd9016 - std::panicking::default_hook::hfeec6294e8751b62
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x632055dd9795 - std::panicking::panic_with_hook::hd57cd463d793ed79
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x632055dd962a - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x632055dd7089 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x632055dc077d - __rustc[256c90bb7e548b45]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x632055e0dda0 - core::panicking::panic_fmt::hf19c198748ef6a95
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x632055da5e43 - build_script_build::compile::h13a5e1dbfe8ad76a
[INFO] [stderr]     17:     0x632055da55cf - build_script_build::main::h7faec2e4e5d347c9
[INFO] [stderr]     18:     0x632055da6a93 - core::ops::function::FnOnce::call_once::hd68aa13e6dd837a7
[INFO] [stderr]     19:     0x632055da6606 - std::sys::backtrace::__rust_begin_short_backtrace::h002060a4044dcf06
[INFO] [stderr]     20:     0x632055da65e9 - std::rt::lang_start::{{closure}}::h394b916ec8b26bef
[INFO] [stderr]     21:     0x632055dcda90 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hdf957eac011d0136
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x632055dcda90 - std::panicking::catch_unwind::do_call::h9ff550f7799115e1
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stderr]     23:     0x632055dcda90 - std::panicking::catch_unwind::ha7ce46787bb12905
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stderr]     24:     0x632055dcda90 - std::panic::catch_unwind::h625b36596def7d39
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x632055dcda90 - std::rt::lang_start_internal::{{closure}}::h4cbc9430de699e2c
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x632055dcda90 - std::panicking::catch_unwind::do_call::h5af2f11409a22e3e
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stderr]     27:     0x632055dcda90 - std::panicking::catch_unwind::hf64cf7b0d8070f52
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stderr]     28:     0x632055dcda90 - std::panic::catch_unwind::h480b74763390cdcf
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x632055dcda90 - std::rt::lang_start_internal::h4b3d04f698aef094
[INFO] [stderr]                                  at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x632055da65d1 - std::rt::lang_start::hacfa44913f3ad863
[INFO] [stderr]     31:     0x632055da7375 - main
[INFO] [stderr]     32:     0x7486ec26d1ca - <unknown>
[INFO] [stderr]     33:     0x7486ec26d28b - __libc_start_main
[INFO] [stderr]     34:     0x632055da4a45 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4c2dff8fa28a0a95a52e5200dcf2948d043eaa55918b01c858a787a64c584279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c2dff8fa28a0a95a52e5200dcf2948d043eaa55918b01c858a787a64c584279", kill_on_drop: false }`
[INFO] [stdout] 4c2dff8fa28a0a95a52e5200dcf2948d043eaa55918b01c858a787a64c584279