[INFO] fetching crate sync_cow 0.1.1...
[INFO] testing sync_cow-0.1.1 against 1.77.0 for beta-1.78-1
[INFO] extracting crate sync_cow 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate sync_cow 0.1.1 on toolchain 1.77.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sync_cow 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sync_cow 0.1.1
[INFO] tweaked toml for crates.io crate sync_cow 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate sync_cow 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 810434d0026933b9488d12bed81ee4e7857086ebbc3afb20d0ad77c6a413cfcd
[INFO] running `Command { std: "docker" "start" "-a" "810434d0026933b9488d12bed81ee4e7857086ebbc3afb20d0ad77c6a413cfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "810434d0026933b9488d12bed81ee4e7857086ebbc3afb20d0ad77c6a413cfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "810434d0026933b9488d12bed81ee4e7857086ebbc3afb20d0ad77c6a413cfcd", kill_on_drop: false }`
[INFO] [stdout] 810434d0026933b9488d12bed81ee4e7857086ebbc3afb20d0ad77c6a413cfcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c693763c95d363c84fd644149c25b4f5ad9d4c2177e85c9cf73a21ecbec691b7
[INFO] running `Command { std: "docker" "start" "-a" "c693763c95d363c84fd644149c25b4f5ad9d4c2177e85c9cf73a21ecbec691b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling sync_cow v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "c693763c95d363c84fd644149c25b4f5ad9d4c2177e85c9cf73a21ecbec691b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c693763c95d363c84fd644149c25b4f5ad9d4c2177e85c9cf73a21ecbec691b7", kill_on_drop: false }`
[INFO] [stdout] c693763c95d363c84fd644149c25b4f5ad9d4c2177e85c9cf73a21ecbec691b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 949b0d2a8bfe3154fd9f1b8172a19df79d29bdffce9a88bad5415971fffb0d2c
[INFO] running `Command { std: "docker" "start" "-a" "949b0d2a8bfe3154fd9f1b8172a19df79d29bdffce9a88bad5415971fffb0d2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling sync_cow v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "949b0d2a8bfe3154fd9f1b8172a19df79d29bdffce9a88bad5415971fffb0d2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "949b0d2a8bfe3154fd9f1b8172a19df79d29bdffce9a88bad5415971fffb0d2c", kill_on_drop: false }`
[INFO] [stdout] 949b0d2a8bfe3154fd9f1b8172a19df79d29bdffce9a88bad5415971fffb0d2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6377d9db0c27c7936910777218ccef612a8a5013f8e92f7c8086a9571d62dded
[INFO] running `Command { std: "docker" "start" "-a" "6377d9db0c27c7936910777218ccef612a8a5013f8e92f7c8086a9571d62dded", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sync_cow-7aa0153825b8fade)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::cow_faster_than_rwlock_nosleep ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.95s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sync_cow
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - SyncCow<T>::edit (line 50) ... ok
[INFO] [stdout] test src/lib.rs - SyncCow<T>::read (line 104) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6377d9db0c27c7936910777218ccef612a8a5013f8e92f7c8086a9571d62dded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6377d9db0c27c7936910777218ccef612a8a5013f8e92f7c8086a9571d62dded", kill_on_drop: false }`
[INFO] [stdout] 6377d9db0c27c7936910777218ccef612a8a5013f8e92f7c8086a9571d62dded