[INFO] updating cached repository dotboris/alt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dotboris/alt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dotboris/alt" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dotboris/alt"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dotboris/alt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dotboris/alt" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/dotboris/alt"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/dotboris/alt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2dcf1fecd6df1d143df401002fc573ded9172c7a
[INFO] sha for GitHub repo dotboris/alt: 2dcf1fecd6df1d143df401002fc573ded9172c7a
[INFO] validating manifest of dotboris/alt on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dotboris/alt on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dotboris/alt
[INFO] finished frobbing dotboris/alt
[INFO] frobbed toml for dotboris/alt written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dotboris/alt/Cargo.toml
[INFO] started frobbing dotboris/alt
[INFO] finished frobbing dotboris/alt
[INFO] frobbed toml for dotboris/alt written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/dotboris/alt/Cargo.toml
[INFO] crate dotboris/alt has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dotboris/alt against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-2/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/dotboris/alt:/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 271ec737070c03344b10874da9b619fc515f87e422116f6d5d680966a0b0703d
[INFO] running `"docker" "start" "-a" "271ec737070c03344b10874da9b619fc515f87e422116f6d5d680966a0b0703d"`
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking predicates v1.0.0
[INFO] [stderr]     Checking dialoguer v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.32
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking alt v1.0.2 (/opt/crater/workdir)
[INFO] [stderr]     Checking assert_cmd v0.10.1
[INFO] [stderr] warning: static variable `env_mutex` should have an upper case name
[INFO] [stderr]   --> src/config.rs:34:20
[INFO] [stderr]    |
[INFO] [stderr] 34 |         static ref env_mutex: Mutex<()> = Mutex::new(());
[INFO] [stderr]    |                    ^^^^^^^^^ help: convert the identifier to upper case: `ENV_MUTEX`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.52s
[INFO] running `"docker" "inspect" "271ec737070c03344b10874da9b619fc515f87e422116f6d5d680966a0b0703d"`
[INFO] running `"docker" "rm" "-f" "271ec737070c03344b10874da9b619fc515f87e422116f6d5d680966a0b0703d"`
[INFO] [stdout] 271ec737070c03344b10874da9b619fc515f87e422116f6d5d680966a0b0703d