[INFO] fetching crate evaltrees 0.1.0...
[INFO] testing evaltrees-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate evaltrees 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate evaltrees 0.1.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate evaltrees 0.1.0
[INFO] finished tweaking crates.io crate evaltrees 0.1.0
[INFO] tweaked toml for crates.io crate evaltrees 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop-util v0.15.2
[INFO] [stderr]   Downloaded display_attr v0.1.1
[INFO] [stderr]   Downloaded lalrpop v0.15.2
[INFO] [stderr]   Downloaded symbol v0.1.9
[INFO] [stderr]   Downloaded lalrpop-snap v0.15.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38f0096eab3f4a051ba662271b824114c9f15e2ed8e74580f23f8ef8054d898e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "38f0096eab3f4a051ba662271b824114c9f15e2ed8e74580f23f8ef8054d898e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38f0096eab3f4a051ba662271b824114c9f15e2ed8e74580f23f8ef8054d898e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38f0096eab3f4a051ba662271b824114c9f15e2ed8e74580f23f8ef8054d898e", kill_on_drop: false }`
[INFO] [stdout] 38f0096eab3f4a051ba662271b824114c9f15e2ed8e74580f23f8ef8054d898e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6874652354f25e583baf763e7c5f7b00bd6e81f9be67cee1a01ab30bdc1426b
[INFO] running `Command { std: "docker" "start" "-a" "a6874652354f25e583baf763e7c5f7b00bd6e81f9be67cee1a01ab30bdc1426b", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling ena v0.5.0
[INFO] [stderr]    Compiling lalrpop-util v0.15.2
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling symbol v0.1.9
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling lalrpop-snap v0.15.2
[INFO] [stderr]    Compiling display_attr v0.1.1
[INFO] [stderr]    Compiling lalrpop v0.15.2
[INFO] [stderr]    Compiling evaltrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stdout]      |
[INFO] [stdout] 9607 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9607 -     (__0)
[INFO] [stdout] 9607 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stdout]      |
[INFO] [stdout] 9618 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9618 -     (__0)
[INFO] [stdout] 9618 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stdout]      |
[INFO] [stdout] 9629 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9629 -     (__0)
[INFO] [stdout] 9629 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stdout]      |
[INFO] [stdout] 9640 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9640 -     (__0)
[INFO] [stdout] 9640 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stdout]      |
[INFO] [stdout] 9809 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9809 -     (__0)
[INFO] [stdout] 9809 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stdout]      |
[INFO] [stdout] 9875 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9875 -     (__0)
[INFO] [stdout] 9875 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stdout]      |
[INFO] [stdout] 9912 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9912 -     (__0)
[INFO] [stdout] 9912 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stdout]      |
[INFO] [stdout] 9962 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9962 -     (__0)
[INFO] [stdout] 9962 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stdout]      |
[INFO] [stdout] 9985 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9985 -     (__0)
[INFO] [stdout] 9985 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stdout]       |
[INFO] [stdout] 10074 |     (__0)
[INFO] [stdout]       |     ^   ^
[INFO] [stdout]       |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]       |
[INFO] [stdout] 10074 -     (__0)
[INFO] [stdout] 10074 +     __0
[INFO] [stdout]       | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/repl.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout]    |                                        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout] 14 +     Evaluator(fn(Vec<Decl<()>>) -> Box<dyn Evaluator>),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stdout]      |
[INFO] [stdout] 9560 |             let __text = self.text.trim_left();
[INFO] [stdout]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 26s
[INFO] running `Command { std: "docker" "inspect" "a6874652354f25e583baf763e7c5f7b00bd6e81f9be67cee1a01ab30bdc1426b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6874652354f25e583baf763e7c5f7b00bd6e81f9be67cee1a01ab30bdc1426b", kill_on_drop: false }`
[INFO] [stdout] a6874652354f25e583baf763e7c5f7b00bd6e81f9be67cee1a01ab30bdc1426b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 738d101d7dea6137f92c7594a3d74ab91c53fd7dbc35d891b4fbf38bf1139ecc
[INFO] running `Command { std: "docker" "start" "-a" "738d101d7dea6137f92c7594a3d74ab91c53fd7dbc35d891b4fbf38bf1139ecc", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stdout]      |
[INFO] [stdout] 9607 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9607 -     (__0)
[INFO] [stdout] 9607 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stdout]      |
[INFO] [stdout] 9618 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9618 -     (__0)
[INFO] [stdout] 9618 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stdout]      |
[INFO] [stdout] 9629 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9629 -     (__0)
[INFO] [stdout] 9629 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stdout]      |
[INFO] [stdout] 9640 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9640 -     (__0)
[INFO] [stdout] 9640 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stdout]      |
[INFO] [stdout] 9809 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9809 -     (__0)
[INFO] [stdout] 9809 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stdout]      |
[INFO] [stdout] 9875 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9875 -     (__0)
[INFO] [stdout] 9875 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stdout]      |
[INFO] [stdout] 9912 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9912 -     (__0)
[INFO] [stdout] 9912 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stdout]      |
[INFO] [stdout] 9962 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9962 -     (__0)
[INFO] [stdout] 9962 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stdout]      |
[INFO] [stdout] 9985 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9985 -     (__0)
[INFO] [stdout] 9985 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stdout]       |
[INFO] [stdout] 10074 |     (__0)
[INFO] [stdout]       |     ^   ^
[INFO] [stdout]       |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]       |
[INFO] [stdout] 10074 -     (__0)
[INFO] [stdout] 10074 +     __0
[INFO] [stdout]       | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/repl.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout]    |                                        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout] 14 +     Evaluator(fn(Vec<Decl<()>>) -> Box<dyn Evaluator>),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stdout]      |
[INFO] [stdout] 9560 |             let __text = self.text.trim_left();
[INFO] [stdout]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling evaltrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stdout]      |
[INFO] [stdout] 9607 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9607 -     (__0)
[INFO] [stdout] 9607 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stdout]      |
[INFO] [stdout] 9618 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9618 -     (__0)
[INFO] [stdout] 9618 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stdout]      |
[INFO] [stdout] 9629 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9629 -     (__0)
[INFO] [stdout] 9629 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stdout]      |
[INFO] [stdout] 9640 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9640 -     (__0)
[INFO] [stdout] 9640 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stdout]      |
[INFO] [stdout] 9809 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9809 -     (__0)
[INFO] [stdout] 9809 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stdout]      |
[INFO] [stdout] 9875 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9875 -     (__0)
[INFO] [stdout] 9875 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stdout]      |
[INFO] [stdout] 9912 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9912 -     (__0)
[INFO] [stdout] 9912 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stdout]      |
[INFO] [stdout] 9962 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9962 -     (__0)
[INFO] [stdout] 9962 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stdout]      |
[INFO] [stdout] 9985 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 9985 -     (__0)
[INFO] [stdout] 9985 +     __0
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stdout]       |
[INFO] [stdout] 10074 |     (__0)
[INFO] [stdout]       |     ^   ^
[INFO] [stdout]       |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]       |
[INFO] [stdout] 10074 -     (__0)
[INFO] [stdout] 10074 +     __0
[INFO] [stdout]       | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/repl.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout]    |                                        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout] 14 +     Evaluator(fn(Vec<Decl<()>>) -> Box<dyn Evaluator>),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stdout]      |
[INFO] [stdout] 9560 |             let __text = self.text.trim_left();
[INFO] [stdout]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.08s
[INFO] running `Command { std: "docker" "inspect" "738d101d7dea6137f92c7594a3d74ab91c53fd7dbc35d891b4fbf38bf1139ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "738d101d7dea6137f92c7594a3d74ab91c53fd7dbc35d891b4fbf38bf1139ecc", kill_on_drop: false }`
[INFO] [stdout] 738d101d7dea6137f92c7594a3d74ab91c53fd7dbc35d891b4fbf38bf1139ecc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a8e884ae4acb988d891198ebf81bb01f5f9888e73f81f03fadd98a8778fbd66d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a8e884ae4acb988d891198ebf81bb01f5f9888e73f81f03fadd98a8778fbd66d", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9607 -     (__0)
[INFO] [stderr] 9607 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9618 -     (__0)
[INFO] [stderr] 9618 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9629 -     (__0)
[INFO] [stderr] 9629 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9640 -     (__0)
[INFO] [stderr] 9640 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9809 -     (__0)
[INFO] [stderr] 9809 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9875 -     (__0)
[INFO] [stderr] 9875 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9912 -     (__0)
[INFO] [stderr] 9912 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9962 -     (__0)
[INFO] [stderr] 9962 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9985 -     (__0)
[INFO] [stderr] 9985 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^   ^
[INFO] [stderr]       |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]       |
[INFO] [stderr] 10074 -     (__0)
[INFO] [stderr] 10074 +     __0
[INFO] [stderr]       | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 14 -     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr] 14 +     Evaluator(fn(Vec<Decl<()>>) -> Box<dyn Evaluator>),
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stderr]      |
[INFO] [stderr] 9560 |             let __text = self.text.trim_left();
[INFO] [stderr]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `evaltrees` (lib) generated 12 warnings
[INFO] [stderr] warning: `evaltrees` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/evaltrees-9f6f3b2c5ac12cef)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test ast::display::tests::type_list_precedence ... ok
[INFO] [stdout] test ast::display::tests::type_func_precedence ... ok
[INFO] [stdout] test ast::display::tests::type_forall_precedence ... ok
[INFO] [stdout] test cst::display::tests::math_parens ... ok
[INFO] [stdout] test cst::display::tests::if_prec ... ok
[INFO] [stdout] test cst::display::tests::subtraction ... ok
[INFO] [stdout] test cst::display::tests::math_noparens ... ok
[INFO] [stdout] test cst::display::tests::call ... ok
[INFO] [stdout] test eval::name::tests::app ... ok
[INFO] [stdout] test eval::lazy::tests::id_int ... ok
[INFO] [stdout] test eval::lazy::tests::app ... ok
[INFO] [stdout] test eval::lazy::tests::sharing ... ok
[INFO] [stdout] test typeck::tests::map_map ... ok
[INFO] [stdout] test eval::value::tests::app ... ok
[INFO] [stdout] test eval::name::tests::strictness ... ok
[INFO] [stdout] test eval::name::tests::infinite ... ok
[INFO] [stdout] test eval::name::tests::id_int ... ok
[INFO] [stdout] test eval::lazy::tests::strictness ... ok
[INFO] [stdout] test typeck::tests::poly_id ... ok
[INFO] [stdout] test eval::lazy::tests::infinite ... ok
[INFO] [stdout] test cst::parser::tests::math_precedence ... ok
[INFO] [stdout] test cst::parser::tests::lists ... ok
[INFO] [stdout] test cst::parser::tests::calls ... ok
[INFO] [stderr]    Doc-tests evaltrees
[INFO] [stdout] test cst::parser::tests::commands ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9607 -     (__0)
[INFO] [stderr] 9607 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9618 -     (__0)
[INFO] [stderr] 9618 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9629 -     (__0)
[INFO] [stderr] 9629 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9640 -     (__0)
[INFO] [stderr] 9640 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9809 -     (__0)
[INFO] [stderr] 9809 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9875 -     (__0)
[INFO] [stderr] 9875 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9912 -     (__0)
[INFO] [stderr] 9912 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9962 -     (__0)
[INFO] [stderr] 9962 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^   ^
[INFO] [stderr]      |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 9985 -     (__0)
[INFO] [stderr] 9985 +     __0
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^   ^
[INFO] [stderr]       |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]       |
[INFO] [stderr] 10074 -     (__0)
[INFO] [stderr] 10074 +     __0
[INFO] [stderr]       | 
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/cst/mod.rs - cst (line 6) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a8e884ae4acb988d891198ebf81bb01f5f9888e73f81f03fadd98a8778fbd66d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e884ae4acb988d891198ebf81bb01f5f9888e73f81f03fadd98a8778fbd66d", kill_on_drop: false }`
[INFO] [stdout] a8e884ae4acb988d891198ebf81bb01f5f9888e73f81f03fadd98a8778fbd66d