[INFO] fetching crate cargo-playground 0.1.0...
[INFO] testing cargo-playground-0.1.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate cargo-playground 0.1.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate cargo-playground 0.1.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-playground 0.1.0
[INFO] finished tweaking crates.io crate cargo-playground 0.1.0
[INFO] tweaked toml for crates.io crate cargo-playground 0.1.0 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate crates.io crate cargo-playground 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2634542d879a98f2ae1eac68c65130b02e4af10dfd6d62004c9036285cb836b1
[INFO] running `Command { std: "docker" "start" "-a" "2634542d879a98f2ae1eac68c65130b02e4af10dfd6d62004c9036285cb836b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2634542d879a98f2ae1eac68c65130b02e4af10dfd6d62004c9036285cb836b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2634542d879a98f2ae1eac68c65130b02e4af10dfd6d62004c9036285cb836b1", kill_on_drop: false }`
[INFO] [stdout] 2634542d879a98f2ae1eac68c65130b02e4af10dfd6d62004c9036285cb836b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb7cd9d5d171c870b23e9e77774f1b0200bb72e6f1b4a670c51a4dd073f0f9d4
[INFO] running `Command { std: "docker" "start" "-a" "cb7cd9d5d171c870b23e9e77774f1b0200bb72e6f1b4a670c51a4dd073f0f9d4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cargo-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "cb7cd9d5d171c870b23e9e77774f1b0200bb72e6f1b4a670c51a4dd073f0f9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb7cd9d5d171c870b23e9e77774f1b0200bb72e6f1b4a670c51a4dd073f0f9d4", kill_on_drop: false }`
[INFO] [stdout] cb7cd9d5d171c870b23e9e77774f1b0200bb72e6f1b4a670c51a4dd073f0f9d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dc5aa3dbba89481e82fa65ad16aa53fd931aa111b4b34b06fd8ba1ee0059c10
[INFO] running `Command { std: "docker" "start" "-a" "0dc5aa3dbba89481e82fa65ad16aa53fd931aa111b4b34b06fd8ba1ee0059c10", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "0dc5aa3dbba89481e82fa65ad16aa53fd931aa111b4b34b06fd8ba1ee0059c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dc5aa3dbba89481e82fa65ad16aa53fd931aa111b4b34b06fd8ba1ee0059c10", kill_on_drop: false }`
[INFO] [stdout] 0dc5aa3dbba89481e82fa65ad16aa53fd931aa111b4b34b06fd8ba1ee0059c10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1074730d86162dfce8d3e724b26e3b9e122dad2e798abc176b1358a999d2886e
[INFO] running `Command { std: "docker" "start" "-a" "1074730d86162dfce8d3e724b26e3b9e122dad2e798abc176b1358a999d2886e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_playground-e9b4fd332e576967)
[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" "1074730d86162dfce8d3e724b26e3b9e122dad2e798abc176b1358a999d2886e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1074730d86162dfce8d3e724b26e3b9e122dad2e798abc176b1358a999d2886e", kill_on_drop: false }`
[INFO] [stdout] 1074730d86162dfce8d3e724b26e3b9e122dad2e798abc176b1358a999d2886e