[INFO] fetching crate cargo-playground 0.1.0...
[INFO] testing cargo-playground-0.1.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate cargo-playground 0.1.0 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate cargo-playground 0.1.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-38/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" "+722e1797249a965b6335aebd65d777f917e498f1" "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-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40e1f835fa80f459622e4ff6cdac178b302a8b10a4e0c4c50ca570d25016e1d7
[INFO] running `Command { std: "docker" "start" "-a" "40e1f835fa80f459622e4ff6cdac178b302a8b10a4e0c4c50ca570d25016e1d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40e1f835fa80f459622e4ff6cdac178b302a8b10a4e0c4c50ca570d25016e1d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e1f835fa80f459622e4ff6cdac178b302a8b10a4e0c4c50ca570d25016e1d7", kill_on_drop: false }`
[INFO] [stdout] 40e1f835fa80f459622e4ff6cdac178b302a8b10a4e0c4c50ca570d25016e1d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e9c2b4ec090c67fcc161b364966d313090f0d84cb38f5f02bbcd233cd0646c4
[INFO] running `Command { std: "docker" "start" "-a" "8e9c2b4ec090c67fcc161b364966d313090f0d84cb38f5f02bbcd233cd0646c4", 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 0.36s
[INFO] running `Command { std: "docker" "inspect" "8e9c2b4ec090c67fcc161b364966d313090f0d84cb38f5f02bbcd233cd0646c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e9c2b4ec090c67fcc161b364966d313090f0d84cb38f5f02bbcd233cd0646c4", kill_on_drop: false }`
[INFO] [stdout] 8e9c2b4ec090c67fcc161b364966d313090f0d84cb38f5f02bbcd233cd0646c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7bd8c911095fdec2054cb382a5e78f09380c62c841dbcb1aa0a087fb9d9b2c1
[INFO] running `Command { std: "docker" "start" "-a" "d7bd8c911095fdec2054cb382a5e78f09380c62c841dbcb1aa0a087fb9d9b2c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "d7bd8c911095fdec2054cb382a5e78f09380c62c841dbcb1aa0a087fb9d9b2c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7bd8c911095fdec2054cb382a5e78f09380c62c841dbcb1aa0a087fb9d9b2c1", kill_on_drop: false }`
[INFO] [stdout] d7bd8c911095fdec2054cb382a5e78f09380c62c841dbcb1aa0a087fb9d9b2c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b7fbce88caf9af47ee3ceab4405b07218db970a15cda91dd809f5f494c23e153
[INFO] running `Command { std: "docker" "start" "-a" "b7fbce88caf9af47ee3ceab4405b07218db970a15cda91dd809f5f494c23e153", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[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" "b7fbce88caf9af47ee3ceab4405b07218db970a15cda91dd809f5f494c23e153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7fbce88caf9af47ee3ceab4405b07218db970a15cda91dd809f5f494c23e153", kill_on_drop: false }`
[INFO] [stdout] b7fbce88caf9af47ee3ceab4405b07218db970a15cda91dd809f5f494c23e153