[INFO] updating cached repository lotabout/rargs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lotabout/rargs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lotabout/rargs" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/lotabout/rargs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/lotabout/rargs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lotabout/rargs" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/lotabout/rargs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/lotabout/rargs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d046eae252e7144571f7530f3879c699b6c1f851
[INFO] sha for GitHub repo lotabout/rargs: d046eae252e7144571f7530f3879c699b6c1f851
[INFO] validating manifest of lotabout/rargs on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lotabout/rargs on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lotabout/rargs
[INFO] finished frobbing lotabout/rargs
[INFO] frobbed toml for lotabout/rargs written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/lotabout/rargs/Cargo.toml
[INFO] started frobbing lotabout/rargs
[INFO] finished frobbing lotabout/rargs
[INFO] frobbed toml for lotabout/rargs written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/lotabout/rargs/Cargo.toml
[INFO] crate lotabout/rargs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lotabout/rargs against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-5/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/lotabout/rargs:/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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] baeef4bfa80f3e0a33bac0618daf23265163c62ef65ddddd3f2a46c49d2bb010
[INFO] running `"docker" "start" "-a" "baeef4bfa80f3e0a33bac0618daf23265163c62ef65ddddd3f2a46c49d2bb010"`
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]    Compiling structopt-derive v0.2.6
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]     Checking structopt v0.2.6
[INFO] [stderr]     Checking rargs v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]extern crate structopt;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.13
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling assert_cli v0.5.4
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_err` that must be used
[INFO] [stderr]   --> tests/lib.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 | /     assert_cli::Assert::command(&[RARGS, "echo", "{}"])
[INFO] [stderr] 56 | |         .stdin("a\0b")
[INFO] [stderr] 57 | |         .stdout()
[INFO] [stderr] 58 | |         .is("a\0b")
[INFO] [stderr] 59 | |         .execute()
[INFO] [stderr] 60 | |         .is_err();
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]extern crate structopt;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.19s
[INFO] running `"docker" "inspect" "baeef4bfa80f3e0a33bac0618daf23265163c62ef65ddddd3f2a46c49d2bb010"`
[INFO] running `"docker" "rm" "-f" "baeef4bfa80f3e0a33bac0618daf23265163c62ef65ddddd3f2a46c49d2bb010"`
[INFO] [stdout] baeef4bfa80f3e0a33bac0618daf23265163c62ef65ddddd3f2a46c49d2bb010