[INFO] updating cached repository luser/hexdump
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luser/hexdump
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luser/hexdump" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/luser/hexdump"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/luser/hexdump'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luser/hexdump" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/luser/hexdump"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/luser/hexdump'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78e82f88f64fbe2411914afec13ff09e9695c9a2
[INFO] sha for GitHub repo luser/hexdump: 78e82f88f64fbe2411914afec13ff09e9695c9a2
[INFO] validating manifest of luser/hexdump 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 luser/hexdump 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 luser/hexdump
[INFO] finished frobbing luser/hexdump
[INFO] frobbed toml for luser/hexdump written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/luser/hexdump/Cargo.toml
[INFO] started frobbing luser/hexdump
[INFO] finished frobbing luser/hexdump
[INFO] frobbed toml for luser/hexdump written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/luser/hexdump/Cargo.toml
[INFO] crate luser/hexdump already has a lockfile, it will not be regenerated
[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 luser/hexdump against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-2/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/luser/hexdump:/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] 0a4ffd2dfe99c68e51f00b743ca47c399d384e2c7f90c0bb3c3c36aaf3a731a6
[INFO] running `"docker" "start" "-a" "0a4ffd2dfe99c68e51f00b743ca47c399d384e2c7f90c0bb3c3c36aaf3a731a6"`
[INFO] [stderr]    Compiling pulldown-cmark v0.1.0
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling getopts v0.2.14
[INFO] [stderr]    Compiling itoa v0.3.3
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling bytecount v0.1.7
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.5
[INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33
[INFO] [stderr]      |
[INFO] [stderr] 955  |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stderr]      |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 959  |         state = match (state, whitespace, limit) {
[INFO] [stderr]      |         ----- borrow occurs due to use of `state` in closure
[INFO] [stderr] ...
[INFO] [stderr] 1008 |     while cont && match state { B | C => true, A => false } {
[INFO] [stderr]      |                                 ^ use of borrowed `state`
[INFO] [stderr] 1009 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stderr]      |         ------- borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling skeptic v0.12.3
[INFO] [stderr]    Compiling read-byte-slice v0.1.0
[INFO] [stderr]     Checking hexdump v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.56s
[INFO] running `"docker" "inspect" "0a4ffd2dfe99c68e51f00b743ca47c399d384e2c7f90c0bb3c3c36aaf3a731a6"`
[INFO] running `"docker" "rm" "-f" "0a4ffd2dfe99c68e51f00b743ca47c399d384e2c7f90c0bb3c3c36aaf3a731a6"`
[INFO] [stdout] 0a4ffd2dfe99c68e51f00b743ca47c399d384e2c7f90c0bb3c3c36aaf3a731a6