[INFO] fetching crate jfc 0.1.6...
[INFO] checking jfc-0.1.6 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate jfc 0.1.6 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate jfc 0.1.6
[INFO] finished tweaking crates.io crate jfc 0.1.6
[INFO] tweaked toml for crates.io crate jfc 0.1.6 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate jfc 0.1.6 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate jfc 0.1.6 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generic_tokenizer v0.1.0
[INFO] [stderr]   Downloaded toy-json-formatter v0.3.7
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b56be22a513d20cb556ca6e9db6d035eb4bdbd3ab94e31f520b9ef75196e8a5b
[INFO] running `Command { std: "docker" "start" "-a" "b56be22a513d20cb556ca6e9db6d035eb4bdbd3ab94e31f520b9ef75196e8a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b56be22a513d20cb556ca6e9db6d035eb4bdbd3ab94e31f520b9ef75196e8a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b56be22a513d20cb556ca6e9db6d035eb4bdbd3ab94e31f520b9ef75196e8a5b", kill_on_drop: false }`
[INFO] [stdout] b56be22a513d20cb556ca6e9db6d035eb4bdbd3ab94e31f520b9ef75196e8a5b
[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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f73e34e19d89d8f2453dab5c1ced8eecec52627891d2062466dd70059f723df
[INFO] running `Command { std: "docker" "start" "-a" "7f73e34e19d89d8f2453dab5c1ced8eecec52627891d2062466dd70059f723df", kill_on_drop: false }`
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking strsim v0.11.0
[INFO] [stderr]     Checking generic_tokenizer v0.1.0
[INFO] [stderr]     Checking toy-json-formatter v0.3.7
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking anstream v0.6.11
[INFO] [stderr]     Checking clap_builder v4.5.0
[INFO] [stderr]     Checking clap v4.5.0
[INFO] [stderr]     Checking jfc v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `stdin`
[INFO] [stdout]  --> src/main.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     io::{stderr, stdin, stdout, BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdin`
[INFO] [stdout]  --> src/main.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     io::{stderr, stdin, stdout, BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.56s
[INFO] running `Command { std: "docker" "inspect" "7f73e34e19d89d8f2453dab5c1ced8eecec52627891d2062466dd70059f723df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f73e34e19d89d8f2453dab5c1ced8eecec52627891d2062466dd70059f723df", kill_on_drop: false }`
[INFO] [stdout] 7f73e34e19d89d8f2453dab5c1ced8eecec52627891d2062466dd70059f723df