[INFO] crate threadpool 1.7.1 is already in cache
[INFO] extracting crate threadpool 1.7.1 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/threadpool/1.7.1
[INFO] extracting crate threadpool 1.7.1 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/threadpool/1.7.1
[INFO] validating manifest of threadpool-1.7.1 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of threadpool-1.7.1 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-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-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/threadpool/1.7.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking threadpool-1.7.1 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-0/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 79e9e88c01b1bff13866e2a25ea0520243449a17b7ad5f8904f16b832674e326
[INFO] running `"docker" "start" "-a" "79e9e88c01b1bff13866e2a25ea0520243449a17b7ad5f8904f16b832674e326"`
[INFO] [stderr]     Checking threadpool v1.7.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:99:22
[INFO] [stderr]    |
[INFO] [stderr] 99 | type Thunk<'a> = Box<FnBox + Send + 'a>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:99:22
[INFO] [stderr]    |
[INFO] [stderr] 99 | type Thunk<'a> = Box<FnBox + Send + 'a>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[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::<T, E>::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]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "79e9e88c01b1bff13866e2a25ea0520243449a17b7ad5f8904f16b832674e326"`
[INFO] running `"docker" "rm" "-f" "79e9e88c01b1bff13866e2a25ea0520243449a17b7ad5f8904f16b832674e326"`
[INFO] [stdout] 79e9e88c01b1bff13866e2a25ea0520243449a17b7ad5f8904f16b832674e326