[INFO] cloning repository thecog19/rust-experiments [INFO] running `"git" "clone" "--bare" "git://github.com/thecog19/rust-experiments.git" "work/cache/sources/gh/thecog19/rust-experiments"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/thecog19/rust-experiments'... [INFO] running `"git" "clone" "work/cache/sources/gh/thecog19/rust-experiments" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/thecog19/rust-experiments"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/thecog19/rust-experiments'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/thecog19/rust-experiments" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/thecog19/rust-experiments"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/thecog19/rust-experiments'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] aeb446f9fb0d6bcaa23de747a7ffbc2391ddd48e [INFO] sha for GitHub repo thecog19/rust-experiments: aeb446f9fb0d6bcaa23de747a7ffbc2391ddd48e [INFO] validating manifest of thecog19/rust-experiments 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 thecog19/rust-experiments 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 thecog19/rust-experiments [INFO] finished frobbing thecog19/rust-experiments [INFO] frobbed toml for thecog19/rust-experiments written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/thecog19/rust-experiments/Cargo.toml [INFO] started frobbing thecog19/rust-experiments [INFO] finished frobbing thecog19/rust-experiments [INFO] frobbed toml for thecog19/rust-experiments written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/thecog19/rust-experiments/Cargo.toml [INFO] crate thecog19/rust-experiments 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] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking thecog19/rust-experiments against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008 [INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/thecog19/rust-experiments:/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] ea39fecda364aea2003a125d3027fbf519f72a3d36e839ae5fd6dbce06253c74 [INFO] running `"docker" "start" "-a" "ea39fecda364aea2003a125d3027fbf519f72a3d36e839ae5fd6dbce06253c74"` [INFO] [stderr] Checking playing-with-rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.35s [INFO] running `"docker" "inspect" "ea39fecda364aea2003a125d3027fbf519f72a3d36e839ae5fd6dbce06253c74"` [INFO] running `"docker" "rm" "-f" "ea39fecda364aea2003a125d3027fbf519f72a3d36e839ae5fd6dbce06253c74"` [INFO] [stdout] ea39fecda364aea2003a125d3027fbf519f72a3d36e839ae5fd6dbce06253c74