[INFO] fetching crate test-io-dev 0.1.0...
[INFO] testing test-io-dev-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate test-io-dev 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate test-io-dev 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate test-io-dev 0.1.0
[INFO] finished tweaking crates.io crate test-io-dev 0.1.0
[INFO] tweaked toml for crates.io crate test-io-dev 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b40978dfbb6f3839fc8ccdc027a981f4e654594aa4c89fae29201edc2c06784e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b40978dfbb6f3839fc8ccdc027a981f4e654594aa4c89fae29201edc2c06784e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b40978dfbb6f3839fc8ccdc027a981f4e654594aa4c89fae29201edc2c06784e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40978dfbb6f3839fc8ccdc027a981f4e654594aa4c89fae29201edc2c06784e", kill_on_drop: false }`
[INFO] [stdout] b40978dfbb6f3839fc8ccdc027a981f4e654594aa4c89fae29201edc2c06784e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ba38fe046c3badc96f74fa5ff6816aa2be6a51f3ae07ee3c4f1b1c243939a01
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9ba38fe046c3badc96f74fa5ff6816aa2be6a51f3ae07ee3c4f1b1c243939a01", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-io-dev v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "9ba38fe046c3badc96f74fa5ff6816aa2be6a51f3ae07ee3c4f1b1c243939a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ba38fe046c3badc96f74fa5ff6816aa2be6a51f3ae07ee3c4f1b1c243939a01", kill_on_drop: false }`
[INFO] [stdout] 9ba38fe046c3badc96f74fa5ff6816aa2be6a51f3ae07ee3c4f1b1c243939a01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75f96d3703f377f96d4358073a26203e8ff5b71f08a6a589f2c01823f06568c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "75f96d3703f377f96d4358073a26203e8ff5b71f08a6a589f2c01823f06568c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-io-dev v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "75f96d3703f377f96d4358073a26203e8ff5b71f08a6a589f2c01823f06568c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75f96d3703f377f96d4358073a26203e8ff5b71f08a6a589f2c01823f06568c8", kill_on_drop: false }`
[INFO] [stdout] 75f96d3703f377f96d4358073a26203e8ff5b71f08a6a589f2c01823f06568c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2cc14f77c3d90176930f21cbbc5e781383fa4a3f81ecdc892357108d672e8a3a
[INFO] running `Command { std: "docker" "start" "-a" "2cc14f77c3d90176930f21cbbc5e781383fa4a3f81ecdc892357108d672e8a3a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_io_dev-437d69ad4a31f313
[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" "2cc14f77c3d90176930f21cbbc5e781383fa4a3f81ecdc892357108d672e8a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc14f77c3d90176930f21cbbc5e781383fa4a3f81ecdc892357108d672e8a3a", kill_on_drop: false }`
[INFO] [stdout] 2cc14f77c3d90176930f21cbbc5e781383fa4a3f81ecdc892357108d672e8a3a