[INFO] cloning repository rofinn/playground
[INFO] running `"git" "clone" "--bare" "git://github.com/rofinn/playground.git" "work/cache/sources/gh/rofinn/playground"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/rofinn/playground'...
[INFO] running `"git" "clone" "work/cache/sources/gh/rofinn/playground" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/rofinn/playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/rofinn/playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rofinn/playground" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/rofinn/playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/rofinn/playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed06821e3298d179b19c2110d8b9ca6354bbd1a0
[INFO] sha for GitHub repo rofinn/playground: ed06821e3298d179b19c2110d8b9ca6354bbd1a0
[INFO] validating manifest of rofinn/playground 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 rofinn/playground 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 rofinn/playground
[INFO] finished frobbing rofinn/playground
[INFO] frobbed toml for rofinn/playground written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/rofinn/playground/Cargo.toml
[INFO] started frobbing rofinn/playground
[INFO] finished frobbing rofinn/playground
[INFO] frobbed toml for rofinn/playground written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/rofinn/playground/Cargo.toml
[INFO] crate rofinn/playground 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] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rofinn/playground against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/rofinn/playground:/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] 287fa794f195d1e0c5469693ca1ad20115a14141a42c4b79351380d61bb7e3bf
[INFO] running `"docker" "start" "-a" "287fa794f195d1e0c5469693ca1ad20115a14141a42c4b79351380d61bb7e3bf"`
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.56s
[INFO] running `"docker" "inspect" "287fa794f195d1e0c5469693ca1ad20115a14141a42c4b79351380d61bb7e3bf"`
[INFO] running `"docker" "rm" "-f" "287fa794f195d1e0c5469693ca1ad20115a14141a42c4b79351380d61bb7e3bf"`
[INFO] [stdout] 287fa794f195d1e0c5469693ca1ad20115a14141a42c4b79351380d61bb7e3bf