[INFO] cloning repository skade/rust-three-days-course
[INFO] running `"git" "clone" "--bare" "git://github.com/skade/rust-three-days-course.git" "work/cache/sources/gh/skade/rust-three-days-course"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/skade/rust-three-days-course'...
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/rust-three-days-course" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/skade/rust-three-days-course"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/skade/rust-three-days-course'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/rust-three-days-course" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/skade/rust-three-days-course"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/skade/rust-three-days-course'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7ff0bba25bedd00de520505d63e5729c49995a38
[INFO] sha for GitHub repo skade/rust-three-days-course: 7ff0bba25bedd00de520505d63e5729c49995a38
[INFO] validating manifest of skade/rust-three-days-course on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of skade/rust-three-days-course on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing skade/rust-three-days-course
[INFO] finished frobbing skade/rust-three-days-course
[INFO] frobbed toml for skade/rust-three-days-course written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/skade/rust-three-days-course/Cargo.toml
[INFO] started frobbing skade/rust-three-days-course
[INFO] finished frobbing skade/rust-three-days-course
[INFO] frobbed toml for skade/rust-three-days-course written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/skade/rust-three-days-course/Cargo.toml
[INFO] crate skade/rust-three-days-course already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shells v0.2.0
[INFO] [stderr]   Downloaded pandoc_types v0.1.0
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking skade/rust-three-days-course against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-5/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/skade/rust-three-days-course:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 76637c2f467a7a1ae9848a97b285ea300a8b569e502d8968298312912db0f34a
[INFO] running `"docker" "start" "-a" "76637c2f467a7a1ae9848a97b285ea300a8b569e502d8968298312912db0f34a"`
[INFO] [stderr]     Checking serde v0.9.12
[INFO] [stderr]     Checking shells v0.2.0
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_derive v0.9.12
[INFO] [stderr]     Checking serde_json v0.9.9
[INFO] [stderr]     Checking pandoc_types v0.1.0
[INFO] [stderr]     Checking tasks v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.00s
[INFO] running `"docker" "inspect" "76637c2f467a7a1ae9848a97b285ea300a8b569e502d8968298312912db0f34a"`
[INFO] running `"docker" "rm" "-f" "76637c2f467a7a1ae9848a97b285ea300a8b569e502d8968298312912db0f34a"`
[INFO] [stdout] 76637c2f467a7a1ae9848a97b285ea300a8b569e502d8968298312912db0f34a