[INFO] fetching crate io_tee 0.1.1...
[INFO] testing io_tee-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate io_tee 0.1.1 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate io_tee 0.1.1 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 io_tee 0.1.1
[INFO] finished tweaking crates.io crate io_tee 0.1.1
[INFO] tweaked toml for crates.io crate io_tee 0.1.1 written to /workspace/builds/worker-43/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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 2db3922658338ae5715d7c4d9b2063fc9c6153d7a4d56ff5877b7c00ec9bef44
[INFO] running `Command { std: "docker" "start" "-a" "2db3922658338ae5715d7c4d9b2063fc9c6153d7a4d56ff5877b7c00ec9bef44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2db3922658338ae5715d7c4d9b2063fc9c6153d7a4d56ff5877b7c00ec9bef44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db3922658338ae5715d7c4d9b2063fc9c6153d7a4d56ff5877b7c00ec9bef44", kill_on_drop: false }`
[INFO] [stdout] 2db3922658338ae5715d7c4d9b2063fc9c6153d7a4d56ff5877b7c00ec9bef44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 4b31e0128ed3eb718e6a185544ed36cdcf8b03a3eb01c6cdda4cf25920c2f11a
[INFO] running `Command { std: "docker" "start" "-a" "4b31e0128ed3eb718e6a185544ed36cdcf8b03a3eb01c6cdda4cf25920c2f11a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling io_tee v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "4b31e0128ed3eb718e6a185544ed36cdcf8b03a3eb01c6cdda4cf25920c2f11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b31e0128ed3eb718e6a185544ed36cdcf8b03a3eb01c6cdda4cf25920c2f11a", kill_on_drop: false }`
[INFO] [stdout] 4b31e0128ed3eb718e6a185544ed36cdcf8b03a3eb01c6cdda4cf25920c2f11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 870317fa48bbd1da211db4e29313fab02ae45c0a5c63cfffa3075dfc16c2c7f3
[INFO] running `Command { std: "docker" "start" "-a" "870317fa48bbd1da211db4e29313fab02ae45c0a5c63cfffa3075dfc16c2c7f3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling io_tee v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "870317fa48bbd1da211db4e29313fab02ae45c0a5c63cfffa3075dfc16c2c7f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "870317fa48bbd1da211db4e29313fab02ae45c0a5c63cfffa3075dfc16c2c7f3", kill_on_drop: false }`
[INFO] [stdout] 870317fa48bbd1da211db4e29313fab02ae45c0a5c63cfffa3075dfc16c2c7f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] d32e72ecba271b270a10a69a45f276cbb259adab4f338cd0884c8d047e73cc66
[INFO] running `Command { std: "docker" "start" "-a" "d32e72ecba271b270a10a69a45f276cbb259adab4f338cd0884c8d047e73cc66", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/io_tee-d4407aa753d22a96)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::basic_read ... ok
[INFO] [stdout] test tests::read_to_end ... ok
[INFO] [stdout] test tests::buf_read ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests io_tee
[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] running `Command { std: "docker" "inspect" "d32e72ecba271b270a10a69a45f276cbb259adab4f338cd0884c8d047e73cc66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d32e72ecba271b270a10a69a45f276cbb259adab4f338cd0884c8d047e73cc66", kill_on_drop: false }`
[INFO] [stdout] d32e72ecba271b270a10a69a45f276cbb259adab4f338cd0884c8d047e73cc66