[INFO] cloning repository https://github.com/calesce/yamb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/calesce/yamb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalesce%2Fyamb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalesce%2Fyamb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ba7d8652bf21bbc6e506a244290d43cd81b85fa
[INFO] testing calesce/yamb against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalesce%2Fyamb" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/calesce/yamb on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/calesce/yamb
[INFO] finished tweaking git repo https://github.com/calesce/yamb
[INFO] tweaked toml for git repo https://github.com/calesce/yamb written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/calesce/yamb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae91429991803eb52305d0478d9235934adcf2c102453d893d8a514bb3668c29
[INFO] running `Command { std: "docker" "start" "-a" "ae91429991803eb52305d0478d9235934adcf2c102453d893d8a514bb3668c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae91429991803eb52305d0478d9235934adcf2c102453d893d8a514bb3668c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae91429991803eb52305d0478d9235934adcf2c102453d893d8a514bb3668c29", kill_on_drop: false }`
[INFO] [stdout] ae91429991803eb52305d0478d9235934adcf2c102453d893d8a514bb3668c29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ada43fa7812ab65fe4aad0b31384e54602c20e4536f16d2a4060828c0b0949c0
[INFO] running `Command { std: "docker" "start" "-a" "ada43fa7812ab65fe4aad0b31384e54602c20e4536f16d2a4060828c0b0949c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling yamb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:37:46
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn read_file(path: &Path) -> std::io::Result<(String)> {
[INFO] [stdout]    |                                              ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 37 - fn read_file(path: &Path) -> std::io::Result<(String)> {
[INFO] [stdout] 37 + fn read_file(path: &Path) -> std::io::Result<String> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Ok((buffer))
[INFO] [stdout]    |        ^      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 42 -     Ok((buffer))
[INFO] [stdout] 42 +     Ok(buffer)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "ada43fa7812ab65fe4aad0b31384e54602c20e4536f16d2a4060828c0b0949c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada43fa7812ab65fe4aad0b31384e54602c20e4536f16d2a4060828c0b0949c0", kill_on_drop: false }`
[INFO] [stdout] ada43fa7812ab65fe4aad0b31384e54602c20e4536f16d2a4060828c0b0949c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a3709cc7dbb39282d15c45889d0b37ff3b361759deae7e9346743f9a57b4b53
[INFO] running `Command { std: "docker" "start" "-a" "6a3709cc7dbb39282d15c45889d0b37ff3b361759deae7e9346743f9a57b4b53", kill_on_drop: false }`
[INFO] [stderr]    Compiling yamb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:37:46
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn read_file(path: &Path) -> std::io::Result<(String)> {
[INFO] [stdout]    |                                              ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 37 - fn read_file(path: &Path) -> std::io::Result<(String)> {
[INFO] [stdout] 37 + fn read_file(path: &Path) -> std::io::Result<String> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Ok((buffer))
[INFO] [stdout]    |        ^      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 42 -     Ok((buffer))
[INFO] [stdout] 42 +     Ok(buffer)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6a3709cc7dbb39282d15c45889d0b37ff3b361759deae7e9346743f9a57b4b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a3709cc7dbb39282d15c45889d0b37ff3b361759deae7e9346743f9a57b4b53", kill_on_drop: false }`
[INFO] [stdout] 6a3709cc7dbb39282d15c45889d0b37ff3b361759deae7e9346743f9a57b4b53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cf9ae80ca0af6f4e266984ceb945592467e060f856db2c341b43a96a259d50f2
[INFO] running `Command { std: "docker" "start" "-a" "cf9ae80ca0af6f4e266984ceb945592467e060f856db2c341b43a96a259d50f2", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:37:46
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 37 | fn read_file(path: &Path) -> std::io::Result<(String)> {
[INFO] [stdout] 
[INFO] [stderr]    |                                              ^      ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 37 - fn read_file(path: &Path) -> std::io::Result<(String)> {
[INFO] [stderr] 37 + fn read_file(path: &Path) -> std::io::Result<String> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/main.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     Ok((buffer))
[INFO] [stderr]    |        ^      ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 42 -     Ok((buffer))
[INFO] [stderr] 42 +     Ok(buffer)
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `yamb` (bin "yamb" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/yamb-082cfe93d191216c)
[INFO] running `Command { std: "docker" "inspect" "cf9ae80ca0af6f4e266984ceb945592467e060f856db2c341b43a96a259d50f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf9ae80ca0af6f4e266984ceb945592467e060f856db2c341b43a96a259d50f2", kill_on_drop: false }`
[INFO] [stdout] cf9ae80ca0af6f4e266984ceb945592467e060f856db2c341b43a96a259d50f2