[INFO] updating cached repository BookOwl/rusty-markov
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BookOwl/rusty-markov
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BookOwl/rusty-markov" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/BookOwl/rusty-markov"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/BookOwl/rusty-markov'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BookOwl/rusty-markov" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/BookOwl/rusty-markov"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/BookOwl/rusty-markov'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5afc737327be960a072b240dcb8aee0b94066df2
[INFO] sha for GitHub repo BookOwl/rusty-markov: 5afc737327be960a072b240dcb8aee0b94066df2
[INFO] validating manifest of BookOwl/rusty-markov on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of BookOwl/rusty-markov on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing BookOwl/rusty-markov
[INFO] finished frobbing BookOwl/rusty-markov
[INFO] frobbed toml for BookOwl/rusty-markov written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/BookOwl/rusty-markov/Cargo.toml
[INFO] started frobbing BookOwl/rusty-markov
[INFO] finished frobbing BookOwl/rusty-markov
[INFO] frobbed toml for BookOwl/rusty-markov written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/BookOwl/rusty-markov/Cargo.toml
[INFO] crate BookOwl/rusty-markov already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking BookOwl/rusty-markov against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/BookOwl/rusty-markov:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d5f6d7d47e2f90b9200809326d0e6834d2c2a38b4217e1e7a059258536244347
[INFO] running `"docker" "start" "-a" "d5f6d7d47e2f90b9200809326d0e6834d2c2a38b4217e1e7a059258536244347"`
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking clap v2.19.1
[INFO] [stderr]     Checking markov v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: missing fragment specifier
[INFO] [stderr]    --> <::clap::macros::clap_app macros>:120:46
[INFO] [stderr]     |
[INFO] [stderr] 120 | (@ arg ($ arg : expr) $ modes : tt ! $ ident $ ($ tail : tt) *) =>
[INFO] [stderr]     |                                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[deny(missing_fragment_specifier)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `markov`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: missing fragment specifier
[INFO] [stderr]    --> <::clap::macros::clap_app macros>:120:46
[INFO] [stderr]     |
[INFO] [stderr] 120 | (@ arg ($ arg : expr) $ modes : tt ! $ ident $ ($ tail : tt) *) =>
[INFO] [stderr]     |                                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[deny(missing_fragment_specifier)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `markov`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d5f6d7d47e2f90b9200809326d0e6834d2c2a38b4217e1e7a059258536244347"`
[INFO] running `"docker" "rm" "-f" "d5f6d7d47e2f90b9200809326d0e6834d2c2a38b4217e1e7a059258536244347"`
[INFO] [stdout] d5f6d7d47e2f90b9200809326d0e6834d2c2a38b4217e1e7a059258536244347