[INFO] fetching crate tracing-mutex 0.1.2...
[INFO] testing tracing-mutex-0.1.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate tracing-mutex 0.1.2 into /workspace/builds/worker-95/source
[INFO] validating manifest of crates.io crate tracing-mutex 0.1.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-mutex 0.1.2
[INFO] finished tweaking crates.io crate tracing-mutex 0.1.2
[INFO] tweaked toml for crates.io crate tracing-mutex 0.1.2 written to /workspace/builds/worker-95/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34ac1cc32df71a5cdf197ca3e8281aa017f6e24f5fe36a1ed9021a033f266185
[INFO] running `Command { std: "docker" "start" "-a" "34ac1cc32df71a5cdf197ca3e8281aa017f6e24f5fe36a1ed9021a033f266185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34ac1cc32df71a5cdf197ca3e8281aa017f6e24f5fe36a1ed9021a033f266185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34ac1cc32df71a5cdf197ca3e8281aa017f6e24f5fe36a1ed9021a033f266185", kill_on_drop: false }`
[INFO] [stdout] 34ac1cc32df71a5cdf197ca3e8281aa017f6e24f5fe36a1ed9021a033f266185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68ba4900672d92d11bc0af03d82982115bf1402a33ceccba0d2a21e748738b08
[INFO] running `Command { std: "docker" "start" "-a" "68ba4900672d92d11bc0af03d82982115bf1402a33ceccba0d2a21e748738b08", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tracing-mutex v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]    --> src/stdsync.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     mutex: BorrowedMutex<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]    --> src/stdsync.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     mutex: BorrowedMutex<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "68ba4900672d92d11bc0af03d82982115bf1402a33ceccba0d2a21e748738b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68ba4900672d92d11bc0af03d82982115bf1402a33ceccba0d2a21e748738b08", kill_on_drop: false }`
[INFO] [stdout] 68ba4900672d92d11bc0af03d82982115bf1402a33ceccba0d2a21e748738b08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d553cf27bb721c403a7f7f333b3dec9583898af4a9ef7671f499130f2e0e660c
[INFO] running `Command { std: "docker" "start" "-a" "d553cf27bb721c403a7f7f333b3dec9583898af4a9ef7671f499130f2e0e660c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]    --> src/stdsync.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     mutex: BorrowedMutex<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]    --> src/stdsync.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     mutex: BorrowedMutex<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tracing-mutex v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]    --> src/stdsync.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     mutex: BorrowedMutex<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]    --> src/stdsync.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     mutex: BorrowedMutex<'a>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.69s
[INFO] running `Command { std: "docker" "inspect" "d553cf27bb721c403a7f7f333b3dec9583898af4a9ef7671f499130f2e0e660c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d553cf27bb721c403a7f7f333b3dec9583898af4a9ef7671f499130f2e0e660c", kill_on_drop: false }`
[INFO] [stdout] d553cf27bb721c403a7f7f333b3dec9583898af4a9ef7671f499130f2e0e660c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 548e08d46a78b70f36ce9696cf589cab27bff4ca6ada88bc557ef64c3565d086
[INFO] running `Command { std: "docker" "start" "-a" "548e08d46a78b70f36ce9696cf589cab27bff4ca6ada88bc557ef64c3565d086", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `mutex`
[INFO] [stderr]    --> src/stdsync.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 |     mutex: BorrowedMutex<'a>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `mutex`
[INFO] [stderr]    --> src/stdsync.rs:230:5
[INFO] [stderr]     |
[INFO] [stderr] 230 |     mutex: BorrowedMutex<'a>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `tracing-mutex` (lib) generated 2 warnings
[INFO] [stderr] warning: `tracing-mutex` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tracing_mutex-eb824b9cafef706b)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test stdsync::tests::test_mutex_usage ... ok
[INFO] [stdout] test tests::test_lazy_mutex_id ... ok
[INFO] [stdout] test tests::test_next_mutex_id ... ok
[INFO] [stdout] test stdsync::tests::test_once_usage ... ok
[INFO] [stdout] test graph::tests::test_digraph ... ok
[INFO] [stdout] test stdsync::tests::test_rwlock_usage ... ok
[INFO] [stdout] test stdsync::tests::test_detect_cycle - should panic ... ok
[INFO] [stdout] test tests::test_mutex_id_conflict - should panic ... ok
[INFO] [stdout] test graph::tests::fuzz_digraph ... ok
[INFO] [stderr]    Doc-tests tracing-mutex
[INFO] [stdout] test tests::fuzz_mutex_id ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/stdsync.rs - stdsync (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.58s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "548e08d46a78b70f36ce9696cf589cab27bff4ca6ada88bc557ef64c3565d086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "548e08d46a78b70f36ce9696cf589cab27bff4ca6ada88bc557ef64c3565d086", kill_on_drop: false }`
[INFO] [stdout] 548e08d46a78b70f36ce9696cf589cab27bff4ca6ada88bc557ef64c3565d086