[INFO] fetching crate utf-8 0.7.5...
[INFO] testing utf-8-0.7.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate utf-8 0.7.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate utf-8 0.7.5 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 utf-8 0.7.5
[INFO] finished tweaking crates.io crate utf-8 0.7.5
[INFO] tweaked toml for crates.io crate utf-8 0.7.5 written to /workspace/builds/worker-6/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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db3ba92caf55a03e4dc2c51a3248280c2049315c9d6b6a7bddfe2c10c68f10b4
[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" "db3ba92caf55a03e4dc2c51a3248280c2049315c9d6b6a7bddfe2c10c68f10b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db3ba92caf55a03e4dc2c51a3248280c2049315c9d6b6a7bddfe2c10c68f10b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db3ba92caf55a03e4dc2c51a3248280c2049315c9d6b6a7bddfe2c10c68f10b4", kill_on_drop: false }`
[INFO] [stdout] db3ba92caf55a03e4dc2c51a3248280c2049315c9d6b6a7bddfe2c10c68f10b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 051e508c3c9e6e605bb4b930e88ee3cf772b0e6ecd96e9c0b048ed934e7bdc3d
[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" "051e508c3c9e6e605bb4b930e88ee3cf772b0e6ecd96e9c0b048ed934e7bdc3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling utf-8 v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "051e508c3c9e6e605bb4b930e88ee3cf772b0e6ecd96e9c0b048ed934e7bdc3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "051e508c3c9e6e605bb4b930e88ee3cf772b0e6ecd96e9c0b048ed934e7bdc3d", kill_on_drop: false }`
[INFO] [stdout] 051e508c3c9e6e605bb4b930e88ee3cf772b0e6ecd96e9c0b048ed934e7bdc3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67308437a265f2d1bae21857b2470c03c304b7b911be2ecdda030f586958ef0b
[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" "67308437a265f2d1bae21857b2470c03c304b7b911be2ecdda030f586958ef0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling utf-8 v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "67308437a265f2d1bae21857b2470c03c304b7b911be2ecdda030f586958ef0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67308437a265f2d1bae21857b2470c03c304b7b911be2ecdda030f586958ef0b", kill_on_drop: false }`
[INFO] [stdout] 67308437a265f2d1bae21857b2470c03c304b7b911be2ecdda030f586958ef0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b85fc16de7e61d39dc18346e6ba47f06f09ddfd73ef96a193de87f4a379865c8
[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" "b85fc16de7e61d39dc18346e6ba47f06f09ddfd73ef96a193de87f4a379865c8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unit-a9bb639e3f3f3e9e
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_str_from_utf8 ... ok
[INFO] [stdout] test test_is_utf8 ... ok
[INFO] [stdout] test test_string_from_utf8_lossy ... ok
[INFO] [stdout] test test_incremental_decoder ... ok
[INFO] [stderr]    Doc-tests utf8
[INFO] [stdout] test test_bufread_decoder ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.48s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lossy.rs - lossy::LossyDecoder (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b85fc16de7e61d39dc18346e6ba47f06f09ddfd73ef96a193de87f4a379865c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85fc16de7e61d39dc18346e6ba47f06f09ddfd73ef96a193de87f4a379865c8", kill_on_drop: false }`
[INFO] [stdout] b85fc16de7e61d39dc18346e6ba47f06f09ddfd73ef96a193de87f4a379865c8