[INFO] fetching crate nix 0.18.0...
[INFO] checking nix-0.18.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate nix 0.18.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate nix 0.18.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nix 0.18.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate nix 0.18.0
[INFO] tweaked toml for crates.io crate nix 0.18.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acfb1c9da53b19419fa097ff1ddb4b35cb097cd8bc7a4a61ccfac6980e704edc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "acfb1c9da53b19419fa097ff1ddb4b35cb097cd8bc7a4a61ccfac6980e704edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acfb1c9da53b19419fa097ff1ddb4b35cb097cd8bc7a4a61ccfac6980e704edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acfb1c9da53b19419fa097ff1ddb4b35cb097cd8bc7a4a61ccfac6980e704edc", kill_on_drop: false }`
[INFO] [stdout] acfb1c9da53b19419fa097ff1ddb4b35cb097cd8bc7a4a61ccfac6980e704edc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e24ce7b05a7e27d008c1e86a49d2a015173f9a2be945e2e7a18e40724d4c75f
[INFO] running `Command { std: "docker" "start" "-a" "3e24ce7b05a7e27d008c1e86a49d2a015173f9a2be945e2e7a18e40724d4c75f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.18.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking caps v0.3.4
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/sys/quota.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         unsafe { libc::QCMD(self.0 as i32, self.1 as i32) }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![deny(unused)]
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_unsafe)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     unsafe { libc::WIFEXITED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     unsafe { libc::WEXITSTATUS(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     unsafe { libc::WIFSIGNALED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:133:22
[INFO] [stdout]     |
[INFO] [stdout] 133 |     Signal::try_from(unsafe { libc::WTERMSIG(status) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     unsafe { libc::WCOREDUMP(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     unsafe { libc::WIFSTOPPED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:145:22
[INFO] [stdout]     |
[INFO] [stdout] 145 |     Signal::try_from(unsafe { libc::WSTOPSIG(status) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:154:5
[INFO] [stdout]     |
[INFO] [stdout] 154 |     unsafe { libc::WSTOPSIG(status) == libc::SIGTRAP | 0x80 }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |     unsafe { libc::WIFCONTINUED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/sys/quota.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         unsafe { libc::QCMD(self.0 as i32, self.1 as i32) }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![deny(unused)]
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_unsafe)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     unsafe { libc::WIFEXITED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     unsafe { libc::WEXITSTATUS(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     unsafe { libc::WIFSIGNALED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:133:22
[INFO] [stdout]     |
[INFO] [stdout] 133 |     Signal::try_from(unsafe { libc::WTERMSIG(status) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     unsafe { libc::WCOREDUMP(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     unsafe { libc::WIFSTOPPED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:145:22
[INFO] [stdout]     |
[INFO] [stdout] 145 |     Signal::try_from(unsafe { libc::WSTOPSIG(status) })
[INFO] [stdout]     |                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:154:5
[INFO] [stdout]     |
[INFO] [stdout] 154 |     unsafe { libc::WSTOPSIG(status) == libc::SIGTRAP | 0x80 }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]    --> src/sys/wait.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |     unsafe { libc::WIFCONTINUED(status) }
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3e24ce7b05a7e27d008c1e86a49d2a015173f9a2be945e2e7a18e40724d4c75f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e24ce7b05a7e27d008c1e86a49d2a015173f9a2be945e2e7a18e40724d4c75f", kill_on_drop: false }`
[INFO] [stdout] 3e24ce7b05a7e27d008c1e86a49d2a015173f9a2be945e2e7a18e40724d4c75f