[INFO] fetching crate string_concat 0.0.1...
[INFO] testing string_concat-0.0.1 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate string_concat 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate string_concat 0.0.1 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate string_concat 0.0.1
[INFO] finished tweaking crates.io crate string_concat 0.0.1
[INFO] tweaked toml for crates.io crate string_concat 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ea06a9ca53e07c772b2771cac9bb6a7782f2544d783381e1a25661ebca5417c
[INFO] running `Command { std: "docker" "start" "-a" "9ea06a9ca53e07c772b2771cac9bb6a7782f2544d783381e1a25661ebca5417c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ea06a9ca53e07c772b2771cac9bb6a7782f2544d783381e1a25661ebca5417c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ea06a9ca53e07c772b2771cac9bb6a7782f2544d783381e1a25661ebca5417c", kill_on_drop: false }`
[INFO] [stdout] 9ea06a9ca53e07c772b2771cac9bb6a7782f2544d783381e1a25661ebca5417c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7187ef11ea68beb45e0d14919ba7f321b4647cab819d503e3a89603c1f542ea
[INFO] running `Command { std: "docker" "start" "-a" "a7187ef11ea68beb45e0d14919ba7f321b4647cab819d503e3a89603c1f542ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_concat v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "a7187ef11ea68beb45e0d14919ba7f321b4647cab819d503e3a89603c1f542ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7187ef11ea68beb45e0d14919ba7f321b4647cab819d503e3a89603c1f542ea", kill_on_drop: false }`
[INFO] [stdout] a7187ef11ea68beb45e0d14919ba7f321b4647cab819d503e3a89603c1f542ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ddb54e81e283ac6b42bb6ae4f9fb91720f46c7cee3e4cc6f01d717ca24a1b74
[INFO] running `Command { std: "docker" "start" "-a" "8ddb54e81e283ac6b42bb6ae4f9fb91720f46c7cee3e4cc6f01d717ca24a1b74", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_concat v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "8ddb54e81e283ac6b42bb6ae4f9fb91720f46c7cee3e4cc6f01d717ca24a1b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ddb54e81e283ac6b42bb6ae4f9fb91720f46c7cee3e4cc6f01d717ca24a1b74", kill_on_drop: false }`
[INFO] [stdout] 8ddb54e81e283ac6b42bb6ae4f9fb91720f46c7cee3e4cc6f01d717ca24a1b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e87642961a687f6a920f2be710754a2fb7e959009a26350fe27de5f977e0bbbb
[INFO] running `Command { std: "docker" "start" "-a" "e87642961a687f6a920f2be710754a2fb7e959009a26350fe27de5f977e0bbbb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/string_concat-c2c02f2036947479)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::it_works_more_complicated ... ok
[INFO] [stdout] test tests::it_works_with_str ... ok
[INFO] [stdout] test tests::it_works_with_stringss ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests string_concat
[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" "e87642961a687f6a920f2be710754a2fb7e959009a26350fe27de5f977e0bbbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87642961a687f6a920f2be710754a2fb7e959009a26350fe27de5f977e0bbbb", kill_on_drop: false }`
[INFO] [stdout] e87642961a687f6a920f2be710754a2fb7e959009a26350fe27de5f977e0bbbb