[INFO] fetching crate grepox 0.2.19...
[INFO] testing grepox-0.2.19 against 1.90.0 for beta-1.91-3
[INFO] extracting crate grepox 0.2.19 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate grepox 0.2.19
[INFO] finished tweaking crates.io crate grepox 0.2.19
[INFO] tweaked toml for crates.io crate grepox 0.2.19 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grepox 0.2.19 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate grepox 0.2.19 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mimalloc v0.1.30
[INFO] [stderr]   Downloaded naive_opt v0.1.18
[INFO] [stderr]   Downloaded semver v1.0.7
[INFO] [stderr]   Downloaded memx v0.1.20
[INFO] [stderr]   Downloaded bstr v1.0.1
[INFO] [stderr]   Downloaded libc v0.2.121
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e6038d3e1afeaf06c3550d1f490c9813cfe04f9682fb7ebea39d458fc3192b2
[INFO] running `Command { std: "docker" "start" "-a" "3e6038d3e1afeaf06c3550d1f490c9813cfe04f9682fb7ebea39d458fc3192b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e6038d3e1afeaf06c3550d1f490c9813cfe04f9682fb7ebea39d458fc3192b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e6038d3e1afeaf06c3550d1f490c9813cfe04f9682fb7ebea39d458fc3192b2", kill_on_drop: false }`
[INFO] [stdout] 3e6038d3e1afeaf06c3550d1f490c9813cfe04f9682fb7ebea39d458fc3192b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 824f4d9b23f5cd71f8b950967a4734d816054c7d441762ce976e1c945e8ef110
[INFO] running `Command { std: "docker" "start" "-a" "824f4d9b23f5cd71f8b950967a4734d816054c7d441762ce976e1c945e8ef110", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.26
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling bstr v1.0.1
[INFO] [stderr]    Compiling memx v0.1.20
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling mimalloc v0.1.30
[INFO] [stderr]    Compiling naive_opt v0.1.18
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling grepox v0.2.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert_bytes` is never used
[INFO] [stdout]    --> src/main.rs:589:8
[INFO] [stdout]     |
[INFO] [stdout] 588 | trait InsertBytes {
[INFO] [stdout]     |       ----------- method in this trait
[INFO] [stdout] 589 |     fn insert_bytes(&mut self, idx: usize, bytes: &[u8]);
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.21s
[INFO] running `Command { std: "docker" "inspect" "824f4d9b23f5cd71f8b950967a4734d816054c7d441762ce976e1c945e8ef110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824f4d9b23f5cd71f8b950967a4734d816054c7d441762ce976e1c945e8ef110", kill_on_drop: false }`
[INFO] [stdout] 824f4d9b23f5cd71f8b950967a4734d816054c7d441762ce976e1c945e8ef110
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d5db20da34fc7fa4f958f44ec29dc9227d2dac02b084dbabd340dd305c12ddd
[INFO] running `Command { std: "docker" "start" "-a" "8d5db20da34fc7fa4f958f44ec29dc9227d2dac02b084dbabd340dd305c12ddd", kill_on_drop: false }`
[INFO] [stderr]    Compiling grepox v0.2.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert_bytes` is never used
[INFO] [stdout]    --> src/main.rs:589:8
[INFO] [stdout]     |
[INFO] [stdout] 588 | trait InsertBytes {
[INFO] [stdout]     |       ----------- method in this trait
[INFO] [stdout] 589 |     fn insert_bytes(&mut self, idx: usize, bytes: &[u8]);
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "8d5db20da34fc7fa4f958f44ec29dc9227d2dac02b084dbabd340dd305c12ddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5db20da34fc7fa4f958f44ec29dc9227d2dac02b084dbabd340dd305c12ddd", kill_on_drop: false }`
[INFO] [stdout] 8d5db20da34fc7fa4f958f44ec29dc9227d2dac02b084dbabd340dd305c12ddd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f310fe09656ecd172a0125421620c4a30ae6e32be853072db28702e63811c109
[INFO] running `Command { std: "docker" "start" "-a" "f310fe09656ecd172a0125421620c4a30ae6e32be853072db28702e63811c109", kill_on_drop: false }`
[INFO] [stderr] warning: method `insert_bytes` is never used
[INFO] [stdout] 
[INFO] [stderr]    --> src/main.rs:589:8
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 588 | trait InsertBytes {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |       ----------- method in this trait
[INFO] [stdout] 
[INFO] [stderr] 589 |     fn insert_bytes(&mut self, idx: usize, bytes: &[u8]);
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `grepox` (bin "grepox" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/grepox-56f00495bc6fb090)
[INFO] running `Command { std: "docker" "inspect" "f310fe09656ecd172a0125421620c4a30ae6e32be853072db28702e63811c109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f310fe09656ecd172a0125421620c4a30ae6e32be853072db28702e63811c109", kill_on_drop: false }`
[INFO] [stdout] f310fe09656ecd172a0125421620c4a30ae6e32be853072db28702e63811c109