[INFO] updating cached repository mcueto/rust-book-chapter-3
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mcueto/rust-book-chapter-3
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mcueto/rust-book-chapter-3" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mcueto/rust-book-chapter-3"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mcueto/rust-book-chapter-3'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mcueto/rust-book-chapter-3" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mcueto/rust-book-chapter-3"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mcueto/rust-book-chapter-3'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 97f27c9df9a8d062c32dd13586a62a179e1b4822
[INFO] sha for GitHub repo mcueto/rust-book-chapter-3: 97f27c9df9a8d062c32dd13586a62a179e1b4822
[INFO] validating manifest of mcueto/rust-book-chapter-3 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mcueto/rust-book-chapter-3 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mcueto/rust-book-chapter-3
[INFO] finished frobbing mcueto/rust-book-chapter-3
[INFO] frobbed toml for mcueto/rust-book-chapter-3 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mcueto/rust-book-chapter-3/Cargo.toml
[INFO] started frobbing mcueto/rust-book-chapter-3
[INFO] finished frobbing mcueto/rust-book-chapter-3
[INFO] frobbed toml for mcueto/rust-book-chapter-3 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mcueto/rust-book-chapter-3/Cargo.toml
[INFO] crate mcueto/rust-book-chapter-3 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mcueto/rust-book-chapter-3 against master#435236b8877cdb98c82eaebfb7887782277265c5 for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-6/master#435236b8877cdb98c82eaebfb7887782277265c5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mcueto/rust-book-chapter-3:/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" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 825581bbdd401a94945d638b62b109cd35cf49f8a9d32c4fd235e39b0de57f87
[INFO] running `"docker" "start" "-a" "825581bbdd401a94945d638b62b109cd35cf49f8a9d32c4fd235e39b0de57f87"`
[INFO] [stderr]     Checking variables v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "825581bbdd401a94945d638b62b109cd35cf49f8a9d32c4fd235e39b0de57f87"`
[INFO] running `"docker" "rm" "-f" "825581bbdd401a94945d638b62b109cd35cf49f8a9d32c4fd235e39b0de57f87"`
[INFO] [stdout] 825581bbdd401a94945d638b62b109cd35cf49f8a9d32c4fd235e39b0de57f87