[INFO] fetching crate shroom 0.0.1...
[INFO] testing shroom-0.0.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate shroom 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate shroom 0.0.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shroom 0.0.1
[INFO] finished tweaking crates.io crate shroom 0.0.1
[INFO] tweaked toml for crates.io crate shroom 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 381d8c6ef24127fbf27e5b767d19ccefbd7fcb892a9c0bdaedde1e853b85773b
[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" "381d8c6ef24127fbf27e5b767d19ccefbd7fcb892a9c0bdaedde1e853b85773b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "381d8c6ef24127fbf27e5b767d19ccefbd7fcb892a9c0bdaedde1e853b85773b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381d8c6ef24127fbf27e5b767d19ccefbd7fcb892a9c0bdaedde1e853b85773b", kill_on_drop: false }`
[INFO] [stdout] 381d8c6ef24127fbf27e5b767d19ccefbd7fcb892a9c0bdaedde1e853b85773b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b92bed68a5364800ed713072fd5d6d6533e9038cb8870fd933082c86f8570090
[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" "b92bed68a5364800ed713072fd5d6d6533e9038cb8870fd933082c86f8570090", kill_on_drop: false }`
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling shroom v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1816:5
[INFO] [stdout]      |
[INFO] [stdout] 1816 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1831:5
[INFO] [stdout]      |
[INFO] [stdout] 1831 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1846:5
[INFO] [stdout]      |
[INFO] [stdout] 1846 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1911:5
[INFO] [stdout]      |
[INFO] [stdout] 1911 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1926:5
[INFO] [stdout]      |
[INFO] [stdout] 1926 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1941:5
[INFO] [stdout]      |
[INFO] [stdout] 1941 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1956:5
[INFO] [stdout]      |
[INFO] [stdout] 1956 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1981:5
[INFO] [stdout]      |
[INFO] [stdout] 1981 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2006:5
[INFO] [stdout]      |
[INFO] [stdout] 2006 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2041:5
[INFO] [stdout]      |
[INFO] [stdout] 2041 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2056:5
[INFO] [stdout]      |
[INFO] [stdout] 2056 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2071:5
[INFO] [stdout]      |
[INFO] [stdout] 2071 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:127:27
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let no_prefix = s.trim_left_matches("0x");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let no_prefix = s.trim_left_matches("0o");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:139:27
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let no_prefix = s.trim_left_matches("0b");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddEq`
[INFO] [stdout]   --> src/ast.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     AddEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SubEq`
[INFO] [stdout]   --> src/ast.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     SubEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MulEq`
[INFO] [stdout]   --> src/ast.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     MulEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DivEq`
[INFO] [stdout]   --> src/ast.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     DivEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ModEq`
[INFO] [stdout]   --> src/ast.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     ModEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PowEq`
[INFO] [stdout]   --> src/ast.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     PowEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitAndEq`
[INFO] [stdout]   --> src/ast.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     BitAndEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitOrEq`
[INFO] [stdout]   --> src/ast.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     BitOrEq,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitXorEq`
[INFO] [stdout]   --> src/ast.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     BitXorEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LshiftEq`
[INFO] [stdout]   --> src/ast.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     LshiftEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RshiftEq`
[INFO] [stdout]   --> src/ast.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     RshiftEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Assign`
[INFO] [stdout]   --> src/ast.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Assign,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.21s
[INFO] running `Command { std: "docker" "inspect" "b92bed68a5364800ed713072fd5d6d6533e9038cb8870fd933082c86f8570090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b92bed68a5364800ed713072fd5d6d6533e9038cb8870fd933082c86f8570090", kill_on_drop: false }`
[INFO] [stdout] b92bed68a5364800ed713072fd5d6d6533e9038cb8870fd933082c86f8570090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 625cfc1a15a1d6456f6210b2b31045bb947805009d9b35d361d0c641576c4c42
[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" "625cfc1a15a1d6456f6210b2b31045bb947805009d9b35d361d0c641576c4c42", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1816:5
[INFO] [stdout]      |
[INFO] [stdout] 1816 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1831:5
[INFO] [stdout]      |
[INFO] [stdout] 1831 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1846:5
[INFO] [stdout]      |
[INFO] [stdout] 1846 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1911:5
[INFO] [stdout]      |
[INFO] [stdout] 1911 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1926:5
[INFO] [stdout]      |
[INFO] [stdout] 1926 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1941:5
[INFO] [stdout]      |
[INFO] [stdout] 1941 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1956:5
[INFO] [stdout]      |
[INFO] [stdout] 1956 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1981:5
[INFO] [stdout]      |
[INFO] [stdout] 1981 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2006:5
[INFO] [stdout]      |
[INFO] [stdout] 2006 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2041:5
[INFO] [stdout]      |
[INFO] [stdout] 2041 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2056:5
[INFO] [stdout]      |
[INFO] [stdout] 2056 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2071:5
[INFO] [stdout]      |
[INFO] [stdout] 2071 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:127:27
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let no_prefix = s.trim_left_matches("0x");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let no_prefix = s.trim_left_matches("0o");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:139:27
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let no_prefix = s.trim_left_matches("0b");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddEq`
[INFO] [stdout]   --> src/ast.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     AddEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SubEq`
[INFO] [stdout]   --> src/ast.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     SubEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MulEq`
[INFO] [stdout]   --> src/ast.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     MulEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DivEq`
[INFO] [stdout]   --> src/ast.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     DivEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ModEq`
[INFO] [stdout]   --> src/ast.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     ModEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PowEq`
[INFO] [stdout]   --> src/ast.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     PowEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitAndEq`
[INFO] [stdout]   --> src/ast.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     BitAndEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitOrEq`
[INFO] [stdout]   --> src/ast.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     BitOrEq,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitXorEq`
[INFO] [stdout]   --> src/ast.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     BitXorEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LshiftEq`
[INFO] [stdout]   --> src/ast.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     LshiftEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RshiftEq`
[INFO] [stdout]   --> src/ast.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     RshiftEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Assign`
[INFO] [stdout]   --> src/ast.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Assign,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling shroom v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1816:5
[INFO] [stdout]      |
[INFO] [stdout] 1816 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1831:5
[INFO] [stdout]      |
[INFO] [stdout] 1831 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1846:5
[INFO] [stdout]      |
[INFO] [stdout] 1846 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1911:5
[INFO] [stdout]      |
[INFO] [stdout] 1911 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1926:5
[INFO] [stdout]      |
[INFO] [stdout] 1926 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1941:5
[INFO] [stdout]      |
[INFO] [stdout] 1941 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1956:5
[INFO] [stdout]      |
[INFO] [stdout] 1956 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:1981:5
[INFO] [stdout]      |
[INFO] [stdout] 1981 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2006:5
[INFO] [stdout]      |
[INFO] [stdout] 2006 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2041:5
[INFO] [stdout]      |
[INFO] [stdout] 2041 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2056:5
[INFO] [stdout]      |
[INFO] [stdout] 2056 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/parser.rs:2071:5
[INFO] [stdout]      |
[INFO] [stdout] 2071 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:127:27
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let no_prefix = s.trim_left_matches("0x");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let no_prefix = s.trim_left_matches("0o");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]    --> src/primitive.rs:139:27
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let no_prefix = s.trim_left_matches("0b");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddEq`
[INFO] [stdout]   --> src/ast.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     AddEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SubEq`
[INFO] [stdout]   --> src/ast.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     SubEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MulEq`
[INFO] [stdout]   --> src/ast.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     MulEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DivEq`
[INFO] [stdout]   --> src/ast.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     DivEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ModEq`
[INFO] [stdout]   --> src/ast.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     ModEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PowEq`
[INFO] [stdout]   --> src/ast.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     PowEq,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitAndEq`
[INFO] [stdout]   --> src/ast.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     BitAndEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitOrEq`
[INFO] [stdout]   --> src/ast.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     BitOrEq,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BitXorEq`
[INFO] [stdout]   --> src/ast.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     BitXorEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LshiftEq`
[INFO] [stdout]   --> src/ast.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     LshiftEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RshiftEq`
[INFO] [stdout]   --> src/ast.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     RshiftEq,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Assign`
[INFO] [stdout]   --> src/ast.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Assign,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.75s
[INFO] running `Command { std: "docker" "inspect" "625cfc1a15a1d6456f6210b2b31045bb947805009d9b35d361d0c641576c4c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "625cfc1a15a1d6456f6210b2b31045bb947805009d9b35d361d0c641576c4c42", kill_on_drop: false }`
[INFO] [stdout] 625cfc1a15a1d6456f6210b2b31045bb947805009d9b35d361d0c641576c4c42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", 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] bfdf4d3c0099945545973d81d02383a14cfc98b3208a6468691feeffbcb13758
[INFO] running `Command { std: "docker" "start" "-a" "bfdf4d3c0099945545973d81d02383a14cfc98b3208a6468691feeffbcb13758", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stdout] running 3 tests
[INFO] [stderr]     --> src/parser.rs:1816:5
[INFO] [stdout] test primitive::tests::additon ... ok
[INFO] [stderr]      |
[INFO] [stdout] test primitive::tests::parsing ... ok
[INFO] [stderr] 1816 |     (__0)
[INFO] [stdout] test primitive::tests::subtraction ... ok
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stderr]      |
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1831:5
[INFO] [stderr]      |
[INFO] [stderr] 1831 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1846:5
[INFO] [stderr]      |
[INFO] [stderr] 1846 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1911:5
[INFO] [stderr]      |
[INFO] [stderr] 1911 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1926:5
[INFO] [stderr]      |
[INFO] [stderr] 1926 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1941:5
[INFO] [stderr]      |
[INFO] [stderr] 1941 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1956:5
[INFO] [stderr]      |
[INFO] [stderr] 1956 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1981:5
[INFO] [stderr]      |
[INFO] [stderr] 1981 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2006:5
[INFO] [stderr]      |
[INFO] [stderr] 2006 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2041:5
[INFO] [stderr]      |
[INFO] [stderr] 2041 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2056:5
[INFO] [stderr]      |
[INFO] [stderr] 2056 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2071:5
[INFO] [stderr]      |
[INFO] [stderr] 2071 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]    --> src/primitive.rs:127:27
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let no_prefix = s.trim_left_matches("0x");
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]    --> src/primitive.rs:133:27
[INFO] [stderr]     |
[INFO] [stderr] 133 |         let no_prefix = s.trim_left_matches("0o");
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]    --> src/primitive.rs:139:27
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let no_prefix = s.trim_left_matches("0b");
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AddEq`
[INFO] [stderr]   --> src/ast.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     AddEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SubEq`
[INFO] [stderr]   --> src/ast.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     SubEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MulEq`
[INFO] [stderr]   --> src/ast.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     MulEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DivEq`
[INFO] [stderr]   --> src/ast.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     DivEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ModEq`
[INFO] [stderr]   --> src/ast.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     ModEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PowEq`
[INFO] [stderr]   --> src/ast.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     PowEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BitAndEq`
[INFO] [stderr]   --> src/ast.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     BitAndEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BitOrEq`
[INFO] [stderr]   --> src/ast.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     BitOrEq,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BitXorEq`
[INFO] [stderr]   --> src/ast.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     BitXorEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LshiftEq`
[INFO] [stderr]   --> src/ast.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     LshiftEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RshiftEq`
[INFO] [stderr]   --> src/ast.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     RshiftEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Assign`
[INFO] [stderr]   --> src/ast.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     Assign,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 27 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1816:5
[INFO] [stderr]      |
[INFO] [stderr] 1816 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1831:5
[INFO] [stderr]      |
[INFO] [stderr] 1831 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1846:5
[INFO] [stderr]      |
[INFO] [stderr] 1846 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1911:5
[INFO] [stderr]      |
[INFO] [stderr] 1911 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1926:5
[INFO] [stderr]      |
[INFO] [stderr] 1926 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1941:5
[INFO] [stderr]      |
[INFO] [stderr] 1941 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1956:5
[INFO] [stderr]      |
[INFO] [stderr] 1956 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:1981:5
[INFO] [stderr]      |
[INFO] [stderr] 1981 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2006:5
[INFO] [stderr]      |
[INFO] [stderr] 2006 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2041:5
[INFO] [stderr]      |
[INFO] [stderr] 2041 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2056:5
[INFO] [stderr]      |
[INFO] [stderr] 2056 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/parser.rs:2071:5
[INFO] [stderr]      |
[INFO] [stderr] 2071 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]    --> src/primitive.rs:127:27
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let no_prefix = s.trim_left_matches("0x");
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]    --> src/primitive.rs:133:27
[INFO] [stderr]     |
[INFO] [stderr] 133 |         let no_prefix = s.trim_left_matches("0o");
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]    --> src/primitive.rs:139:27
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let no_prefix = s.trim_left_matches("0b");
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AddEq`
[INFO] [stderr]   --> src/ast.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     AddEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SubEq`
[INFO] [stderr]   --> src/ast.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     SubEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MulEq`
[INFO] [stderr]   --> src/ast.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     MulEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DivEq`
[INFO] [stderr]   --> src/ast.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     DivEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ModEq`
[INFO] [stderr]   --> src/ast.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     ModEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PowEq`
[INFO] [stderr]   --> src/ast.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     PowEq,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BitAndEq`
[INFO] [stderr]   --> src/ast.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     BitAndEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BitOrEq`
[INFO] [stderr]   --> src/ast.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     BitOrEq,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BitXorEq`
[INFO] [stderr]   --> src/ast.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     BitXorEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LshiftEq`
[INFO] [stderr]   --> src/ast.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     LshiftEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RshiftEq`
[INFO] [stderr]   --> src/ast.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     RshiftEq,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Assign`
[INFO] [stderr]   --> src/ast.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     Assign,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 27 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/shroom-1a49f4dbccb8e33e
[INFO] [stderr]    Doc-tests shroom
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1816:5
[INFO] [stderr]      |
[INFO] [stderr] 1816 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1831:5
[INFO] [stderr]      |
[INFO] [stderr] 1831 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1846:5
[INFO] [stderr]      |
[INFO] [stderr] 1846 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1911:5
[INFO] [stderr]      |
[INFO] [stderr] 1911 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1926:5
[INFO] [stderr]      |
[INFO] [stderr] 1926 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1941:5
[INFO] [stderr]      |
[INFO] [stderr] 1941 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1956:5
[INFO] [stderr]      |
[INFO] [stderr] 1956 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:1981:5
[INFO] [stderr]      |
[INFO] [stderr] 1981 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:2006:5
[INFO] [stderr]      |
[INFO] [stderr] 2006 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:2041:5
[INFO] [stderr]      |
[INFO] [stderr] 2041 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:2056:5
[INFO] [stderr]      |
[INFO] [stderr] 2056 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/parser.rs:2071:5
[INFO] [stderr]      |
[INFO] [stderr] 2071 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/primitive.rs - primitive::Primitive (line 11) ... ok
[INFO] [stdout] test src/lib.rs - Shroom (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bfdf4d3c0099945545973d81d02383a14cfc98b3208a6468691feeffbcb13758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfdf4d3c0099945545973d81d02383a14cfc98b3208a6468691feeffbcb13758", kill_on_drop: false }`
[INFO] [stdout] bfdf4d3c0099945545973d81d02383a14cfc98b3208a6468691feeffbcb13758