[INFO] cloning repository deciduously/rebuild-markov
[INFO] running `"git" "clone" "--bare" "git://github.com/deciduously/rebuild-markov.git" "work/cache/sources/gh/deciduously/rebuild-markov"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/deciduously/rebuild-markov'...
[INFO] running `"git" "clone" "work/cache/sources/gh/deciduously/rebuild-markov" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/deciduously/rebuild-markov"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/deciduously/rebuild-markov'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/deciduously/rebuild-markov" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/deciduously/rebuild-markov"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/deciduously/rebuild-markov'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f6b9c9bb36580d78553954ac55b0ebbc7152f570
[INFO] sha for GitHub repo deciduously/rebuild-markov: f6b9c9bb36580d78553954ac55b0ebbc7152f570
[INFO] validating manifest of deciduously/rebuild-markov on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of deciduously/rebuild-markov on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing deciduously/rebuild-markov
[INFO] finished frobbing deciduously/rebuild-markov
[INFO] frobbed toml for deciduously/rebuild-markov written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/deciduously/rebuild-markov/Cargo.toml
[INFO] started frobbing deciduously/rebuild-markov
[INFO] finished frobbing deciduously/rebuild-markov
[INFO] frobbed toml for deciduously/rebuild-markov written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/deciduously/rebuild-markov/Cargo.toml
[INFO] crate deciduously/rebuild-markov already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking deciduously/rebuild-markov against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-0/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/deciduously/rebuild-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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dfc3e94058f75865690d8876659f1a959c0d6dc3683e8d70f21a314250ffa00f
[INFO] running `"docker" "start" "-a" "dfc3e94058f75865690d8876659f1a959c0d6dc3683e8d70f21a314250ffa00f"`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking rebuild-markov v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:15:55
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |        ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                        ^^^^^^ help: consider prefixing with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:15:55
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |        ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                        ^^^^^^ help: consider prefixing with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.44s
[INFO] running `"docker" "inspect" "dfc3e94058f75865690d8876659f1a959c0d6dc3683e8d70f21a314250ffa00f"`
[INFO] running `"docker" "rm" "-f" "dfc3e94058f75865690d8876659f1a959c0d6dc3683e8d70f21a314250ffa00f"`
[INFO] [stdout] dfc3e94058f75865690d8876659f1a959c0d6dc3683e8d70f21a314250ffa00f