[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-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozamimy%2Frepro-sass-sys-build-failure" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-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-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mozamimy/repro-sass-sys-build-failure on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15dde1b2999a6f28222f3d24bb01b45b4c731c9a5063c02537a2634857d89ffd
[INFO] running `Command { std: "docker" "start" "-a" "15dde1b2999a6f28222f3d24bb01b45b4c731c9a5063c02537a2634857d89ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15dde1b2999a6f28222f3d24bb01b45b4c731c9a5063c02537a2634857d89ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15dde1b2999a6f28222f3d24bb01b45b4c731c9a5063c02537a2634857d89ffd", kill_on_drop: false }`
[INFO] [stdout] 15dde1b2999a6f28222f3d24bb01b45b4c731c9a5063c02537a2634857d89ffd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3b8c42c06b71a2c1c20e55fd4cb72d8dfc7eea4ed137277ca630c330771ba32
[INFO] running `Command { std: "docker" "start" "-a" "f3b8c42c06b71a2c1c20e55fd4cb72d8dfc7eea4ed137277ca630c330771ba32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[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-0eea65e4f2f2b616/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   DEBUG: jobs = 16
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (93) 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]   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/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]   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]   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/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/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]   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]   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]   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]   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]   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/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/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]   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: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: 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/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]   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/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]   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]   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/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]   g++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr]   compilation terminated.
[INFO] [stderr]   make: *** [Makefile:249: src/ast.o] Error 1
[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]   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: 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/file.o] Error 1
[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/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]   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]   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]   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] 
[INFO] [stderr]   STDOUT:mkdir lib
[INFO] [stderr]   cc -Wall -O2 -DLIBSASS_VERSION="\"39e3\"" -I /opt/rustwide/target/debug/build/sass-sys-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/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-6194d3474c4712d2/out/build/include -fPIC -fPIC -c -o src/listize.o src/listize.cpp
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x59668b122b7a - std[128c3efe2914e152]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x59668b122b7a - std[128c3efe2914e152]::backtrace_rs::backtrace::trace_unsynchronized::<std[128c3efe2914e152]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x59668b122b7a - std[128c3efe2914e152]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x59668b122b7a - <<std[128c3efe2914e152]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x59668b135b2a - <core[6771d259883166e6]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x59668b135b2a - core[6771d259883166e6]::fmt::write
[INFO] [stderr]      6:     0x59668b1284a2 - std[128c3efe2914e152]::io::default_write_fmt::<std[128c3efe2914e152]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11
[INFO] [stderr]      7:     0x59668b1284a2 - <std[128c3efe2914e152]::sys::stdio::unix::Stderr as std[128c3efe2914e152]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13
[INFO] [stderr]      8:     0x59668b104e7f - <std[128c3efe2914e152]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x59668b104e7f - std[128c3efe2914e152]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x59668b11d351 - std[128c3efe2914e152]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x59668b11d50b - std[128c3efe2914e152]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x59668b104f38 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x59668b0fa009 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace::<std[128c3efe2914e152]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x59668b10589d - __rustc[752cc74e29381ccc]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x59668b13627c - core[6771d259883166e6]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x59668b0d4945 - build_script_build::compile::h626ed91a744de029
[INFO] [stderr]     17:     0x59668b0d408f - build_script_build::main::h89d649fdb8efbd25
[INFO] [stderr]     18:     0x59668b0d55e3 - core::ops::function::FnOnce::call_once::h476c81808456ea64
[INFO] [stderr]     19:     0x59668b0d5116 - std::sys::backtrace::__rust_begin_short_backtrace::hf28f13f9e395e48f
[INFO] [stderr]     20:     0x59668b0d50f9 - std::rt::lang_start::{{closure}}::h1c284dca57fdaa58
[INFO] [stderr]     21:     0x59668b11c4b4 - <&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x59668b11c4b4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x59668b11c4b4 - std[128c3efe2914e152]::panicking::catch_unwind::<i32, &dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x59668b11c4b4 - std[128c3efe2914e152]::panic::catch_unwind::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x59668b11c4b4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x59668b11c4b4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x59668b11c4b4 - std[128c3efe2914e152]::panicking::catch_unwind::<isize, std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x59668b11c4b4 - std[128c3efe2914e152]::panic::catch_unwind::<std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x59668b11c4b4 - std[128c3efe2914e152]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x59668b0d50e1 - std::rt::lang_start::h9ab25c0b2b0c4d9b
[INFO] [stderr]     31:     0x59668b0d5c95 - main
[INFO] [stderr]     32:     0x77fa3dea61ca - <unknown>
[INFO] [stderr]     33:     0x77fa3dea628b - __libc_start_main
[INFO] [stderr]     34:     0x59668b0d3505 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "f3b8c42c06b71a2c1c20e55fd4cb72d8dfc7eea4ed137277ca630c330771ba32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b8c42c06b71a2c1c20e55fd4cb72d8dfc7eea4ed137277ca630c330771ba32", kill_on_drop: false }`
[INFO] [stdout] f3b8c42c06b71a2c1c20e55fd4cb72d8dfc7eea4ed137277ca630c330771ba32
