[INFO] fetching crate stylish-core 0.1.2...
[INFO] building stylish-core-0.1.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate stylish-core 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate stylish-core 0.1.2
[INFO] finished tweaking crates.io crate stylish-core 0.1.2
[INFO] tweaked toml for crates.io crate stylish-core 0.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stylish-core 0.1.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding with_builtin_macros v0.0.3 (available: v0.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stylish-html v0.1.2
[INFO] [stderr]   Downloaded stylish-style v0.1.1
[INFO] [stderr]   Downloaded stylish-ansi v0.1.2
[INFO] [stderr]   Downloaded stylish-core v0.1.2
[INFO] [stderr]   Downloaded with_builtin_macros-proc_macros v0.0.3
[INFO] [stderr]   Downloaded stylish v0.1.0
[INFO] [stderr]   Downloaded stylish-plain v0.1.0
[INFO] [stderr]   Downloaded stylish-macros v0.1.2
[INFO] [stderr]   Downloaded with_builtin_macros v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be57f051d3d0d348df12a870fdefa703eeca50118b62f480fa34ffc14fbcca9a
[INFO] running `Command { std: "docker" "start" "-a" "be57f051d3d0d348df12a870fdefa703eeca50118b62f480fa34ffc14fbcca9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be57f051d3d0d348df12a870fdefa703eeca50118b62f480fa34ffc14fbcca9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be57f051d3d0d348df12a870fdefa703eeca50118b62f480fa34ffc14fbcca9a", kill_on_drop: false }`
[INFO] [stdout] be57f051d3d0d348df12a870fdefa703eeca50118b62f480fa34ffc14fbcca9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 640fd13c60b65852364f75de8f3fe6ce9a5c9048469914f489a50142a48bffda
[INFO] running `Command { std: "docker" "start" "-a" "640fd13c60b65852364f75de8f3fe6ce9a5c9048469914f489a50142a48bffda", kill_on_drop: false }`
[INFO] [stderr]    Compiling stylish-style v0.1.1
[INFO] [stderr]    Compiling stylish-core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `StdProxy` is never constructed
[INFO] [stdout]   --> src/std_compat.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub(crate) struct StdProxy<'a, 'b>(pub(crate) &'a mut crate::formatter::Formatter<'b>);
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmt` is never constructed
[INFO] [stdout]  --> src/arguments.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StdFmt<'a> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtOther` is never constructed
[INFO] [stdout]   --> src/arguments.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct StdFmtOther<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtDebug` is never constructed
[INFO] [stdout]   --> src/arguments.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct StdFmtDebug<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "640fd13c60b65852364f75de8f3fe6ce9a5c9048469914f489a50142a48bffda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "640fd13c60b65852364f75de8f3fe6ce9a5c9048469914f489a50142a48bffda", kill_on_drop: false }`
[INFO] [stdout] 640fd13c60b65852364f75de8f3fe6ce9a5c9048469914f489a50142a48bffda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a579127fb73378350dd35957bc10f3563f7176c3cf77804009e20c5d076a552c
[INFO] running `Command { std: "docker" "start" "-a" "a579127fb73378350dd35957bc10f3563f7176c3cf77804009e20c5d076a552c", kill_on_drop: false }`
[INFO] [stderr]    Compiling stylish-style v0.1.1
[INFO] [stderr]    Compiling with_builtin_macros-proc_macros v0.0.3
[INFO] [stdout] warning: struct `StdProxy` is never constructed
[INFO] [stdout]   --> src/std_compat.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub(crate) struct StdProxy<'a, 'b>(pub(crate) &'a mut crate::formatter::Formatter<'b>);
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmt` is never constructed
[INFO] [stdout]  --> src/arguments.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StdFmt<'a> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtOther` is never constructed
[INFO] [stdout]   --> src/arguments.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct StdFmtOther<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtDebug` is never constructed
[INFO] [stdout]   --> src/arguments.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct StdFmtDebug<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling stylish-macros v0.1.2
[INFO] [stderr]    Compiling with_builtin_macros v0.0.3
[INFO] [stderr]    Compiling stylish-core v0.1.2
[INFO] [stderr]    Compiling stylish v0.1.0
[INFO] [stderr]    Compiling stylish-core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `StdProxy` is never constructed
[INFO] [stdout]   --> src/std_compat.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub(crate) struct StdProxy<'a, 'b>(pub(crate) &'a mut crate::formatter::Formatter<'b>);
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmt` is never constructed
[INFO] [stdout]  --> src/arguments.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StdFmt<'a> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtOther` is never constructed
[INFO] [stdout]   --> src/arguments.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct StdFmtOther<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtDebug` is never constructed
[INFO] [stdout]   --> src/arguments.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct StdFmtDebug<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.77s
[INFO] running `Command { std: "docker" "inspect" "a579127fb73378350dd35957bc10f3563f7176c3cf77804009e20c5d076a552c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a579127fb73378350dd35957bc10f3563f7176c3cf77804009e20c5d076a552c", kill_on_drop: false }`
[INFO] [stdout] a579127fb73378350dd35957bc10f3563f7176c3cf77804009e20c5d076a552c