[INFO] fetching crate grepox 0.2.19...
[INFO] testing grepox-0.2.19 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate grepox 0.2.19 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grepox 0.2.19 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded naive_opt v0.1.18
[INFO] [stderr]   Downloaded mimalloc v0.1.30
[INFO] [stderr]   Downloaded semver v1.0.7
[INFO] [stderr]   Downloaded serde v1.0.147
[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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87e5cb5ccaf1f67edee848d6afb3e6ddabf584f6dca9c4b98117a4c972779f24
[INFO] running `Command { std: "docker" "start" "-a" "87e5cb5ccaf1f67edee848d6afb3e6ddabf584f6dca9c4b98117a4c972779f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87e5cb5ccaf1f67edee848d6afb3e6ddabf584f6dca9c4b98117a4c972779f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e5cb5ccaf1f67edee848d6afb3e6ddabf584f6dca9c4b98117a4c972779f24", kill_on_drop: false }`
[INFO] [stdout] 87e5cb5ccaf1f67edee848d6afb3e6ddabf584f6dca9c4b98117a4c972779f24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ab5a3561ec5d009f5fb378e24661b0b912bd37e6193f2242ce729589073bc5e
[INFO] running `Command { std: "docker" "start" "-a" "4ab5a3561ec5d009f5fb378e24661b0b912bd37e6193f2242ce729589073bc5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling bstr v1.0.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.26
[INFO] [stderr]    Compiling memx v0.1.20
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling naive_opt v0.1.18
[INFO] [stderr]    Compiling mimalloc v0.1.30
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.08s
[INFO] running `Command { std: "docker" "inspect" "4ab5a3561ec5d009f5fb378e24661b0b912bd37e6193f2242ce729589073bc5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ab5a3561ec5d009f5fb378e24661b0b912bd37e6193f2242ce729589073bc5e", kill_on_drop: false }`
[INFO] [stdout] 4ab5a3561ec5d009f5fb378e24661b0b912bd37e6193f2242ce729589073bc5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbe9d1283db77e68c0b38404ee16b2833d75aa007023e2176f7443ab4ed8ba36
[INFO] running `Command { std: "docker" "start" "-a" "fbe9d1283db77e68c0b38404ee16b2833d75aa007023e2176f7443ab4ed8ba36", 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "fbe9d1283db77e68c0b38404ee16b2833d75aa007023e2176f7443ab4ed8ba36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbe9d1283db77e68c0b38404ee16b2833d75aa007023e2176f7443ab4ed8ba36", kill_on_drop: false }`
[INFO] [stdout] fbe9d1283db77e68c0b38404ee16b2833d75aa007023e2176f7443ab4ed8ba36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 995667db749b089fbe8def01fa45610e1df53af36fe2178e8af4612aa624ccc2
[INFO] running `Command { std: "docker" "start" "-a" "995667db749b089fbe8def01fa45610e1df53af36fe2178e8af4612aa624ccc2", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: method `insert_bytes` is never used
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:589:8
[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] 588 | trait InsertBytes {
[INFO] [stdout] 
[INFO] [stderr]     |       ----------- method in this trait
[INFO] [stderr] 589 |     fn insert_bytes(&mut self, idx: usize, bytes: &[u8]);
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/grepox-a530221fccfa08c3)
[INFO] running `Command { std: "docker" "inspect" "995667db749b089fbe8def01fa45610e1df53af36fe2178e8af4612aa624ccc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "995667db749b089fbe8def01fa45610e1df53af36fe2178e8af4612aa624ccc2", kill_on_drop: false }`
[INFO] [stdout] 995667db749b089fbe8def01fa45610e1df53af36fe2178e8af4612aa624ccc2