[INFO] fetching crate loss 0.1.0...
[INFO] testing loss-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate loss 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate loss 0.1.0
[INFO] finished tweaking crates.io crate loss 0.1.0
[INFO] tweaked toml for crates.io crate loss 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate loss 0.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81c460757ea82f7a28c156da07af3413035294d1b0235b9de63bd18e267b5d3c
[INFO] running `Command { std: "docker" "start" "-a" "81c460757ea82f7a28c156da07af3413035294d1b0235b9de63bd18e267b5d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81c460757ea82f7a28c156da07af3413035294d1b0235b9de63bd18e267b5d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c460757ea82f7a28c156da07af3413035294d1b0235b9de63bd18e267b5d3c", kill_on_drop: false }`
[INFO] [stdout] 81c460757ea82f7a28c156da07af3413035294d1b0235b9de63bd18e267b5d3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1fefe43da48fae6966037004d2b6d7876eba6bda24ca11351f6bcbfec1e2465
[INFO] running `Command { std: "docker" "start" "-a" "f1fefe43da48fae6966037004d2b6d7876eba6bda24ca11351f6bcbfec1e2465", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling tracing-serde v0.2.0
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling tracing-subscriber v0.3.23
[INFO] [stderr]    Compiling loss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tracing::Subscriber`
[INFO] [stdout]   --> src/dead.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing::Subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.94s
[INFO] running `Command { std: "docker" "inspect" "f1fefe43da48fae6966037004d2b6d7876eba6bda24ca11351f6bcbfec1e2465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1fefe43da48fae6966037004d2b6d7876eba6bda24ca11351f6bcbfec1e2465", kill_on_drop: false }`
[INFO] [stdout] f1fefe43da48fae6966037004d2b6d7876eba6bda24ca11351f6bcbfec1e2465
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6ef4e01339e77f5ce12fe1f858639b77b84434a9a2d9496df1d4e4ab62c86bf
[INFO] running `Command { std: "docker" "start" "-a" "d6ef4e01339e77f5ce12fe1f858639b77b84434a9a2d9496df1d4e4ab62c86bf", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `tracing::Subscriber`
[INFO] [stdout]   --> src/dead.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing::Subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling loss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tracing::Subscriber`
[INFO] [stdout]   --> src/dead.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing::Subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "d6ef4e01339e77f5ce12fe1f858639b77b84434a9a2d9496df1d4e4ab62c86bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6ef4e01339e77f5ce12fe1f858639b77b84434a9a2d9496df1d4e4ab62c86bf", kill_on_drop: false }`
[INFO] [stdout] d6ef4e01339e77f5ce12fe1f858639b77b84434a9a2d9496df1d4e4ab62c86bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 009348a7fb6fd84361a59381ac1fb51ee7dd354b444d43042e23f6175464d596
[INFO] running `Command { std: "docker" "start" "-a" "009348a7fb6fd84361a59381ac1fb51ee7dd354b444d43042e23f6175464d596", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `tracing::Subscriber`
[INFO] [stderr]   --> src/dead.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | use tracing::Subscriber;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `loss` (lib) generated 1 warning
[INFO] [stderr] warning: `loss` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loss-482d625bb63a8c61)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests loss
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] test src/dead.rs - dead (line 20) ... ok
[INFO] [stdout] test src/dead.rs - dead (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "009348a7fb6fd84361a59381ac1fb51ee7dd354b444d43042e23f6175464d596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "009348a7fb6fd84361a59381ac1fb51ee7dd354b444d43042e23f6175464d596", kill_on_drop: false }`
[INFO] [stdout] 009348a7fb6fd84361a59381ac1fb51ee7dd354b444d43042e23f6175464d596