[INFO] fetching crate string 0.2.1...
[INFO] testing string-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate string 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate string 0.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate string 0.2.1
[INFO] finished tweaking crates.io crate string 0.2.1
[INFO] tweaked toml for crates.io crate string 0.2.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2325466b30f65ab9eb34c5950e108b43ea7c3eb387ab3fc2412539a587c56f9
[INFO] running `Command { std: "docker" "start" "-a" "f2325466b30f65ab9eb34c5950e108b43ea7c3eb387ab3fc2412539a587c56f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2325466b30f65ab9eb34c5950e108b43ea7c3eb387ab3fc2412539a587c56f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2325466b30f65ab9eb34c5950e108b43ea7c3eb387ab3fc2412539a587c56f9", kill_on_drop: false }`
[INFO] [stdout] f2325466b30f65ab9eb34c5950e108b43ea7c3eb387ab3fc2412539a587c56f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a59d1d83bb63753c61457fdcc13e2aadef8c012f483388d9eabd046c3580ac60
[INFO] running `Command { std: "docker" "start" "-a" "a59d1d83bb63753c61457fdcc13e2aadef8c012f483388d9eabd046c3580ac60", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling string v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.74s
[INFO] running `Command { std: "docker" "inspect" "a59d1d83bb63753c61457fdcc13e2aadef8c012f483388d9eabd046c3580ac60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a59d1d83bb63753c61457fdcc13e2aadef8c012f483388d9eabd046c3580ac60", kill_on_drop: false }`
[INFO] [stdout] a59d1d83bb63753c61457fdcc13e2aadef8c012f483388d9eabd046c3580ac60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43728580f3fdd91ef811c6d1eaa544a9e5ad5a97d775e5e4fb1c96be3410af2a
[INFO] running `Command { std: "docker" "start" "-a" "43728580f3fdd91ef811c6d1eaa544a9e5ad5a97d775e5e4fb1c96be3410af2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling string v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "43728580f3fdd91ef811c6d1eaa544a9e5ad5a97d775e5e4fb1c96be3410af2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43728580f3fdd91ef811c6d1eaa544a9e5ad5a97d775e5e4fb1c96be3410af2a", kill_on_drop: false }`
[INFO] [stdout] 43728580f3fdd91ef811c6d1eaa544a9e5ad5a97d775e5e4fb1c96be3410af2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 50f004b7d1324271cc23511485e4392a3d6e76b9a3c7c2f4ce11469b3fd1656b
[INFO] running `Command { std: "docker" "start" "-a" "50f004b7d1324271cc23511485e4392a3d6e76b9a3c7c2f4ce11469b3fd1656b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/string-985e7d755f0a1335)
[INFO] [stdout] test test::test_try_from_bytes ... ok
[INFO] [stdout] test test::test_from_str ... ok
[INFO] [stderr]    Doc-tests string
[INFO] [stdout] test test::test_from_std_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - String::new (line 114) ... ok
[INFO] [stdout] test src/lib.rs - String<T>::get_ref (line 48) ... ok
[INFO] [stdout] test src/lib.rs - String<T>::into_inner (line 80) ... ok
[INFO] [stdout] test src/lib.rs - String<T>::from_str (line 93) ... ok
[INFO] [stdout] test src/lib.rs - String<T>::get_mut (line 64) ... ok
[INFO] [stdout] test src/lib.rs - (line 14) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.72s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "50f004b7d1324271cc23511485e4392a3d6e76b9a3c7c2f4ce11469b3fd1656b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f004b7d1324271cc23511485e4392a3d6e76b9a3c7c2f4ce11469b3fd1656b", kill_on_drop: false }`
[INFO] [stdout] 50f004b7d1324271cc23511485e4392a3d6e76b9a3c7c2f4ce11469b3fd1656b