[INFO] crate threadpool 1.7.1 is already in cache [INFO] extracting crate threadpool 1.7.1 into work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/threadpool/1.7.1 [INFO] extracting crate threadpool 1.7.1 into work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/threadpool/1.7.1 [INFO] validating manifest of threadpool-1.7.1 on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of threadpool-1.7.1 on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing threadpool-1.7.1 [INFO] finished frobbing threadpool-1.7.1 [INFO] frobbed toml for threadpool-1.7.1 written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/threadpool/1.7.1/Cargo.toml [INFO] started frobbing threadpool-1.7.1 [INFO] finished frobbing threadpool-1.7.1 [INFO] frobbed toml for threadpool-1.7.1 written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/threadpool/1.7.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking threadpool-1.7.1 against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-7/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/threadpool/1.7.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] f956fd5af9d4c008f7a75c5f52bf1ea065ddae2b944d7566975f5e44a011fec9 [INFO] running `"docker" "start" "-a" "f956fd5af9d4c008f7a75c5f52bf1ea065ddae2b944d7566975f5e44a011fec9"` [INFO] [stderr] Checking threadpool v1.7.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused arithmetic operation that must be used [INFO] [stderr] --> src/lib.rs:815:36 [INFO] [stderr] | [INFO] [stderr] 815 | pool.execute(move || { 1 + 1; }); [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::result::Result::::is_ok` that must be used [INFO] [stderr] --> src/lib.rs:927:17 [INFO] [stderr] | [INFO] [stderr] 927 | tx.send(1).is_ok(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.72s [INFO] running `"docker" "inspect" "f956fd5af9d4c008f7a75c5f52bf1ea065ddae2b944d7566975f5e44a011fec9"` [INFO] running `"docker" "rm" "-f" "f956fd5af9d4c008f7a75c5f52bf1ea065ddae2b944d7566975f5e44a011fec9"` [INFO] [stdout] f956fd5af9d4c008f7a75c5f52bf1ea065ddae2b944d7566975f5e44a011fec9