Dec 11 15:46:53.537 INFO checking karataliu/showenv against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 15:46:53.538 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 15:46:54.126 INFO [stdout] 37c0015d4f1022c10cd605db1d086688d82d57e219c48c4e578d5ec28a2ec2b4
Dec 11 15:46:54.128 INFO running `"docker" "start" "-a" "37c0015d4f1022c10cd605db1d086688d82d57e219c48c4e578d5ec28a2ec2b4"`
Dec 11 15:46:56.371 INFO [stderr] usermod: no changes
Dec 11 15:46:56.580 INFO [stderr]     Checking serde_yaml v0.7.3
Dec 11 15:46:56.580 INFO [stderr]     Checking hyper v0.10.13
Dec 11 15:47:01.324 INFO [stderr]     Checking nickel v0.10.1
Dec 11 15:47:04.076 INFO [stderr]     Checking showenv v0.1.0 (/source)
Dec 11 15:47:06.828 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.43s
Dec 11 15:47:06.836 INFO [stderr] su: No module specific data is present
Dec 11 15:47:08.228 INFO running `"docker" "inspect" "37c0015d4f1022c10cd605db1d086688d82d57e219c48c4e578d5ec28a2ec2b4"`
Dec 11 15:47:08.622 INFO running `"docker" "rm" "-f" "37c0015d4f1022c10cd605db1d086688d82d57e219c48c4e578d5ec28a2ec2b4"`
Dec 11 15:47:08.916 INFO [stdout] 37c0015d4f1022c10cd605db1d086688d82d57e219c48c4e578d5ec28a2ec2b4