Dec 19 05:52:00.700 INFO checking vwxyzjn/hello_cargo against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:52:00.700 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/vwxyzjn/hello_cargo:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:52:01.272 INFO [stdout] 771a59e2c2235af0b31bd6f58008146f29fb2260ae0470a018292e9e561ce124
Dec 19 05:52:01.275 INFO running `"docker" "start" "-a" "771a59e2c2235af0b31bd6f58008146f29fb2260ae0470a018292e9e561ce124"`
Dec 19 05:52:03.404 INFO [stderr]     Checking rand v0.3.20
Dec 19 05:52:04.812 INFO [stderr]     Checking hello_cargo v0.1.0 (/opt/crater/workdir)
Dec 19 05:52:04.988 INFO [stderr] warning: unused import: `std::io`
Dec 19 05:52:04.988 INFO [stderr]  --> src/main.rs:1:5
Dec 19 05:52:04.988 INFO [stderr]   |
Dec 19 05:52:04.988 INFO [stderr] 1 | use std::io;
Dec 19 05:52:04.988 INFO [stderr]   |     ^^^^^^^
Dec 19 05:52:04.988 INFO [stderr]   |
Dec 19 05:52:04.988 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:52:04.988 INFO [stderr] 
Dec 19 05:52:05.096 INFO [stderr] warning: unused import: `std::io`
Dec 19 05:52:05.096 INFO [stderr]  --> src/main.rs:1:5
Dec 19 05:52:05.096 INFO [stderr]   |
Dec 19 05:52:05.096 INFO [stderr] 1 | use std::io;
Dec 19 05:52:05.096 INFO [stderr]   |     ^^^^^^^
Dec 19 05:52:05.096 INFO [stderr]   |
Dec 19 05:52:05.096 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:52:05.096 INFO [stderr] 
Dec 19 05:52:05.271 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
Dec 19 05:52:06.556 INFO running `"docker" "inspect" "771a59e2c2235af0b31bd6f58008146f29fb2260ae0470a018292e9e561ce124"`
Dec 19 05:52:06.936 INFO running `"docker" "rm" "-f" "771a59e2c2235af0b31bd6f58008146f29fb2260ae0470a018292e9e561ce124"`
Dec 19 05:52:07.376 INFO [stdout] 771a59e2c2235af0b31bd6f58008146f29fb2260ae0470a018292e9e561ce124