[INFO] crate nix 0.15.0 is already in cache
[INFO] checking nix-0.15.0 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate nix 0.15.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate nix 0.15.0 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate nix 0.15.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate nix 0.15.0
[INFO] tweaked toml for crates.io crate nix 0.15.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 829d5b2f4a5bb2443cbf78003e5836b6adb1c1d6bb071a183f8a09e6536f9843
[INFO] running `"docker" "start" "-a" "829d5b2f4a5bb2443cbf78003e5836b6adb1c1d6bb071a183f8a09e6536f9843"`
[INFO] [stderr]    Compiling nix v0.15.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking caps v0.3.3
[INFO] [stderr] error: unnecessary parentheses around type
[INFO] [stderr]    --> src/mqueue.rs:143:46
[INFO] [stderr]     |
[INFO] [stderr] 143 | pub fn mq_set_nonblock(mqd: mqd_t) -> Result<(MqAttr)> {
[INFO] [stderr]     |                                              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:13:9
[INFO] [stderr]     |
[INFO] [stderr] 13  | #![deny(unused)]
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     = note: `#[deny(unused_parens)]` implied by `#[deny(unused)]`
[INFO] [stderr] 
[INFO] [stderr] error: unnecessary parentheses around type
[INFO] [stderr]    --> src/mqueue.rs:155:49
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub fn mq_remove_nonblock(mqd: mqd_t) -> Result<(MqAttr)> {
[INFO] [stderr]     |                                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr] error: unnecessary parentheses around type
[INFO] [stderr]    --> src/mqueue.rs:143:46
[INFO] [stderr]     |
[INFO] [stderr] 143 | pub fn mq_set_nonblock(mqd: mqd_t) -> Result<(MqAttr)> {
[INFO] [stderr]     |                                              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:13:9
[INFO] [stderr]     |
[INFO] [stderr] 13  | #![deny(unused)]
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     = note: `#[deny(unused_parens)]` implied by `#[deny(unused)]`
[INFO] [stderr] 
[INFO] [stderr] error: unnecessary parentheses around type
[INFO] [stderr]    --> src/mqueue.rs:155:49
[INFO] [stderr]     |
[INFO] [stderr] 155 | pub fn mq_remove_nonblock(mqd: mqd_t) -> Result<(MqAttr)> {
[INFO] [stderr]     |                                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `nix`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `nix`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "829d5b2f4a5bb2443cbf78003e5836b6adb1c1d6bb071a183f8a09e6536f9843"`
[INFO] running `"docker" "rm" "-f" "829d5b2f4a5bb2443cbf78003e5836b6adb1c1d6bb071a183f8a09e6536f9843"`
[INFO] [stdout] 829d5b2f4a5bb2443cbf78003e5836b6adb1c1d6bb071a183f8a09e6536f9843