[INFO] crate nix 0.13.0 is already in cache
[INFO] extracting crate nix 0.13.0 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/nix/0.13.0
[INFO] extracting crate nix 0.13.0 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/nix/0.13.0
[INFO] validating manifest of nix-0.13.0 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nix-0.13.0 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nix-0.13.0
[INFO] removed 0 missing tests
[INFO] finished frobbing nix-0.13.0
[INFO] frobbed toml for nix-0.13.0 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/nix/0.13.0/Cargo.toml
[INFO] started frobbing nix-0.13.0
[INFO] removed 0 missing tests
[INFO] finished frobbing nix-0.13.0
[INFO] frobbed toml for nix-0.13.0 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/nix/0.13.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nix-0.13.0 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/nix/0.13.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1645f97c6c9f13a0f6142850acb6c28e9c22ec02bd94a8587f73923eecc2b5bb
[INFO] running `"docker" "start" "-a" "1645f97c6c9f13a0f6142850acb6c28e9c22ec02bd94a8587f73923eecc2b5bb"`
[INFO] [stderr]    Compiling nix v0.13.0 (/opt/crater/workdir)
[INFO] [stderr] error: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/mount.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 2  | use libc;
[INFO] [stderr]    |     ---- the item `libc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 64 |     use libc;
[INFO] [stderr]    |         ^^^^
[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_imports)] implied by #[deny(unused)]
[INFO] [stderr] 
[INFO] [stderr] error: the item `libc` is imported redundantly
[INFO] [stderr]     --> src/unistd.rs:1117:9
[INFO] [stderr]      |
[INFO] [stderr] 7    | use libc::{self, c_char, c_void, c_int, c_long, c_uint, size_t, pid_t, off_t,
[INFO] [stderr]      |            ---- the item `libc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 1117 |     use libc;
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] error: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/mount.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 2  | use libc;
[INFO] [stderr]    |     ---- the item `libc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 64 |     use libc;
[INFO] [stderr]    |         ^^^^
[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_imports)] implied by #[deny(unused)]
[INFO] [stderr] 
[INFO] [stderr] error: the item `libc` is imported redundantly
[INFO] [stderr]     --> src/unistd.rs:1117:9
[INFO] [stderr]      |
[INFO] [stderr] 7    | use libc::{self, c_char, c_void, c_int, c_long, c_uint, size_t, pid_t, off_t,
[INFO] [stderr]      |            ---- the item `libc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 1117 |     use libc;
[INFO] [stderr]      |         ^^^^
[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" "1645f97c6c9f13a0f6142850acb6c28e9c22ec02bd94a8587f73923eecc2b5bb"`
[INFO] running `"docker" "rm" "-f" "1645f97c6c9f13a0f6142850acb6c28e9c22ec02bd94a8587f73923eecc2b5bb"`
[INFO] [stdout] 1645f97c6c9f13a0f6142850acb6c28e9c22ec02bd94a8587f73923eecc2b5bb