[INFO] updating cached repository https://github.com/EkardNT/external-sort
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3531ca6f4287a0fe197337e699ebcc1d89c1ef6f
[INFO] checking EkardNT/external-sort against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEkardNT%2Fexternal-sort" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EkardNT/external-sort on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/EkardNT/external-sort
[INFO] finished tweaking git repo https://github.com/EkardNT/external-sort
[INFO] tweaked toml for git repo https://github.com/EkardNT/external-sort written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/EkardNT/external-sort already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 040843697defd91942ed066ce6a3d2baf47f24405e45fe3edddae4791423aec0
[INFO] running `"docker" "start" "-a" "040843697defd91942ed066ce6a3d2baf47f24405e45fe3edddae4791423aec0"`
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking fine_grained v0.1.2
[INFO] [stderr]     Checking clap v2.31.1
[INFO] [stderr]     Checking external-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/generate.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let mut stdout = ::std::io::stdout();
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/validate.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut stdin = ::std::io::stdin();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/validate.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut stdin = ::std::io::stdin();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `entries`
[INFO] [stderr]    --> src/bin/sort.rs:268:5
[INFO] [stderr]     |
[INFO] [stderr] 268 |     entries: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bytes`
[INFO] [stderr]    --> src/bin/sort.rs:270:5
[INFO] [stderr]     |
[INFO] [stderr] 270 |     bytes: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `line_max_length`
[INFO] [stderr]    --> src/bin/sort.rs:272:5
[INFO] [stderr]     |
[INFO] [stderr] 272 |     line_max_length: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `line_min_length`
[INFO] [stderr]    --> src/bin/sort.rs:274:5
[INFO] [stderr]     |
[INFO] [stderr] 274 |     line_min_length: usize
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `chunk_index`
[INFO] [stderr]    --> src/bin/sort.rs:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     chunk_index: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/generate.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let mut stdout = ::std::io::stdout();
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `entries`
[INFO] [stderr]    --> src/bin/sort.rs:268:5
[INFO] [stderr]     |
[INFO] [stderr] 268 |     entries: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bytes`
[INFO] [stderr]    --> src/bin/sort.rs:270:5
[INFO] [stderr]     |
[INFO] [stderr] 270 |     bytes: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `line_max_length`
[INFO] [stderr]    --> src/bin/sort.rs:272:5
[INFO] [stderr]     |
[INFO] [stderr] 272 |     line_max_length: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `line_min_length`
[INFO] [stderr]    --> src/bin/sort.rs:274:5
[INFO] [stderr]     |
[INFO] [stderr] 274 |     line_min_length: usize
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `chunk_index`
[INFO] [stderr]    --> src/bin/sort.rs:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     chunk_index: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.98s
[INFO] running `"docker" "inspect" "040843697defd91942ed066ce6a3d2baf47f24405e45fe3edddae4791423aec0"`
[INFO] running `"docker" "rm" "-f" "040843697defd91942ed066ce6a3d2baf47f24405e45fe3edddae4791423aec0"`
[INFO] [stdout] 040843697defd91942ed066ce6a3d2baf47f24405e45fe3edddae4791423aec0