[INFO] crate ntree 0.1.0 is already in cache
[INFO] checking ntree-0.1.0 against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] extracting crate ntree 0.1.0 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate ntree 0.1.0 on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ntree 0.1.0
[INFO] finished tweaking crates.io crate ntree 0.1.0
[INFO] tweaked toml for crates.io crate ntree 0.1.0 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f5c979b30d873585d95a580fbd39c9a876a5e2c966faf4c561a749a9386fcd2b
[INFO] running `"docker" "start" "-a" "f5c979b30d873585d95a580fbd39c9a876a5e2c966faf4c561a749a9386fcd2b"`
[INFO] [stderr]     Checking ref_slice v1.2.0
[INFO] [stderr]     Checking ntree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: unused import: `Region`
[INFO] [stderr]   --> src/test.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 | use {NTree, Region};
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:2:24
[INFO] [stderr]    |
[INFO] [stderr] 2  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]    |                        ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `ntree`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f5c979b30d873585d95a580fbd39c9a876a5e2c966faf4c561a749a9386fcd2b"`
[INFO] running `"docker" "rm" "-f" "f5c979b30d873585d95a580fbd39c9a876a5e2c966faf4c561a749a9386fcd2b"`
[INFO] [stdout] f5c979b30d873585d95a580fbd39c9a876a5e2c966faf4c561a749a9386fcd2b