[INFO] fetching crate tracing-browser-subscriber 0.2.0...
[INFO] checking tracing-browser-subscriber-0.2.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate tracing-browser-subscriber 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate tracing-browser-subscriber 0.2.0
[INFO] finished tweaking crates.io crate tracing-browser-subscriber 0.2.0
[INFO] tweaked toml for crates.io crate tracing-browser-subscriber 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tracing-browser-subscriber 0.2.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57ee8a1530a35febedc380a413d6f274dcc19f6d665bf8fb1b1e971d091843cf
[INFO] running `Command { std: "docker" "start" "-a" "57ee8a1530a35febedc380a413d6f274dcc19f6d665bf8fb1b1e971d091843cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57ee8a1530a35febedc380a413d6f274dcc19f6d665bf8fb1b1e971d091843cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57ee8a1530a35febedc380a413d6f274dcc19f6d665bf8fb1b1e971d091843cf", kill_on_drop: false }`
[INFO] [stdout] 57ee8a1530a35febedc380a413d6f274dcc19f6d665bf8fb1b1e971d091843cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e16ea8896107b1cbe6b17ffc93540561dd0aea4769712f1a7853b0bb46f386c7
[INFO] running `Command { std: "docker" "start" "-a" "e16ea8896107b1cbe6b17ffc93540561dd0aea4769712f1a7853b0bb46f386c7", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.50
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.100
[INFO] [stderr]     Checking wasm-bindgen v0.2.100
[INFO] [stderr]     Checking js-sys v0.3.77
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.50
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.50
[INFO] [stderr]     Checking tracing-browser-subscriber v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `instrumented_incrementor` is never used
[INFO] [stdout]   --> src/tests.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn instrumented_incrementor(arg: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `instrumented_function` is never used
[INFO] [stdout]   --> src/tests.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn instrumented_function(arg: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `it_works` is never used
[INFO] [stdout]   --> src/tests.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn it_works() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.65s
[INFO] running `Command { std: "docker" "inspect" "e16ea8896107b1cbe6b17ffc93540561dd0aea4769712f1a7853b0bb46f386c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e16ea8896107b1cbe6b17ffc93540561dd0aea4769712f1a7853b0bb46f386c7", kill_on_drop: false }`
[INFO] [stdout] e16ea8896107b1cbe6b17ffc93540561dd0aea4769712f1a7853b0bb46f386c7