[INFO] fetching crate prefix_string 1.0.0...
[INFO] testing prefix_string-1.0.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate prefix_string 1.0.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate prefix_string 1.0.0 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 prefix_string 1.0.0
[INFO] finished tweaking crates.io crate prefix_string 1.0.0
[INFO] tweaked toml for crates.io crate prefix_string 1.0.0 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate crates.io crate prefix_string 1.0.0 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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 7595cbde152df13c189bfaa1f5b22fb448df255caa9646152f08dd42d8662813
[INFO] running `Command { std: "docker" "start" "-a" "7595cbde152df13c189bfaa1f5b22fb448df255caa9646152f08dd42d8662813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7595cbde152df13c189bfaa1f5b22fb448df255caa9646152f08dd42d8662813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7595cbde152df13c189bfaa1f5b22fb448df255caa9646152f08dd42d8662813", kill_on_drop: false }`
[INFO] [stdout] 7595cbde152df13c189bfaa1f5b22fb448df255caa9646152f08dd42d8662813
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 5ea320bc0d8d6ea4f269bd14d11dcb076fda3f36f61e702736b2f003af2ab262
[INFO] running `Command { std: "docker" "start" "-a" "5ea320bc0d8d6ea4f269bd14d11dcb076fda3f36f61e702736b2f003af2ab262", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling prefix_string v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "5ea320bc0d8d6ea4f269bd14d11dcb076fda3f36f61e702736b2f003af2ab262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ea320bc0d8d6ea4f269bd14d11dcb076fda3f36f61e702736b2f003af2ab262", kill_on_drop: false }`
[INFO] [stdout] 5ea320bc0d8d6ea4f269bd14d11dcb076fda3f36f61e702736b2f003af2ab262
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 89e9bc7a2443b68f433378cd6ed000c8e6ea126a2dc1e5abde88e28b6d75d89d
[INFO] running `Command { std: "docker" "start" "-a" "89e9bc7a2443b68f433378cd6ed000c8e6ea126a2dc1e5abde88e28b6d75d89d", kill_on_drop: false }`
[INFO] [stderr]    Compiling prefix_string v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "89e9bc7a2443b68f433378cd6ed000c8e6ea126a2dc1e5abde88e28b6d75d89d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89e9bc7a2443b68f433378cd6ed000c8e6ea126a2dc1e5abde88e28b6d75d89d", kill_on_drop: false }`
[INFO] [stdout] 89e9bc7a2443b68f433378cd6ed000c8e6ea126a2dc1e5abde88e28b6d75d89d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] bef75bf21a94ef4cb63fe0a9366d7b1b4b4b437cb0138441eaed1c5ec46be927
[INFO] running `Command { std: "docker" "start" "-a" "bef75bf21a94ef4cb63fe0a9366d7b1b4b4b437cb0138441eaed1c5ec46be927", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prefix_string-48d56d8368e5eac5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test already_prefixed ... ok
[INFO] [stdout] test regular_usage ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prefix_string-bcbc11ed1bafed7c)
[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] [stderr]    Doc-tests prefix_string
[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" "bef75bf21a94ef4cb63fe0a9366d7b1b4b4b437cb0138441eaed1c5ec46be927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef75bf21a94ef4cb63fe0a9366d7b1b4b4b437cb0138441eaed1c5ec46be927", kill_on_drop: false }`
[INFO] [stdout] bef75bf21a94ef4cb63fe0a9366d7b1b4b4b437cb0138441eaed1c5ec46be927