[INFO] updating cached repository tomc1998/specs_test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tomc1998/specs_test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tomc1998/specs_test" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tomc1998/specs_test"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tomc1998/specs_test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tomc1998/specs_test" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomc1998/specs_test"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomc1998/specs_test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c82dd36d319a3f4e0bf57a787663baa067001c5
[INFO] sha for GitHub repo tomc1998/specs_test: 7c82dd36d319a3f4e0bf57a787663baa067001c5
[INFO] validating manifest of tomc1998/specs_test on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tomc1998/specs_test on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tomc1998/specs_test
[INFO] finished frobbing tomc1998/specs_test
[INFO] frobbed toml for tomc1998/specs_test written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tomc1998/specs_test/Cargo.toml
[INFO] started frobbing tomc1998/specs_test
[INFO] finished frobbing tomc1998/specs_test
[INFO] frobbed toml for tomc1998/specs_test written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomc1998/specs_test/Cargo.toml
[INFO] crate tomc1998/specs_test already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tomc1998/specs_test against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-2/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomc1998/specs_test:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7248d7497b51aff63d2fa66ede589a7850964b428e6c26f437901767417e9173
[INFO] running `"docker" "start" "-a" "7248d7497b51aff63d2fa66ede589a7850964b428e6c26f437901767417e9173"`
[INFO] [stderr]    Compiling libc v0.2.22
[INFO] [stderr]     Checking atom v0.3.4
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]     Checking threadpool v1.3.2
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]     Checking ticketed_lock v0.1.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking x11-dl v2.13.0
[INFO] [stderr]     Checking shared_library v0.1.5
[INFO] [stderr]     Checking time v0.1.37
[INFO] [stderr]     Checking backtrace-sys v0.1.10
[INFO] [stderr]     Checking num_cpus v1.4.0
[INFO] [stderr]     Checking backtrace v0.2.3
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking pulse v0.5.3
[INFO] [stderr]     Checking specs v0.8.1
[INFO] [stderr]     Checking tempfile v2.1.5
[INFO] [stderr]     Checking cgmath v0.14.1
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.7.8
[INFO] [stderr]     Checking wayland-client v0.7.8
[INFO] [stderr]     Checking wayland-kbd v0.6.3
[INFO] [stderr]     Checking wayland-window v0.4.4
[INFO] [stderr]     Checking winit v0.5.11
[INFO] [stderr]     Checking glutin v0.7.4
[INFO] [stderr]     Checking glium v0.16.0
[INFO] [stderr]     Checking specs_test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/main.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rand::{Rng, StdRng};
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/main.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rand::{Rng, StdRng};
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/main.rs:52:11
[INFO] [stderr]    |
[INFO] [stderr] 52 |   let mut rng = StdRng::new().unwrap();
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:52:7
[INFO] [stderr]    |
[INFO] [stderr] 52 |   let mut rng = StdRng::new().unwrap();
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/main.rs:52:11
[INFO] [stderr]    |
[INFO] [stderr] 52 |   let mut rng = StdRng::new().unwrap();
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:52:7
[INFO] [stderr]    |
[INFO] [stderr] 52 |   let mut rng = StdRng::new().unwrap();
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `"docker" "inspect" "7248d7497b51aff63d2fa66ede589a7850964b428e6c26f437901767417e9173"`
[INFO] running `"docker" "rm" "-f" "7248d7497b51aff63d2fa66ede589a7850964b428e6c26f437901767417e9173"`
[INFO] [stdout] 7248d7497b51aff63d2fa66ede589a7850964b428e6c26f437901767417e9173