[INFO] crate readfilez 0.2.1 is already in cache
[INFO] testing readfilez-0.2.1 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate readfilez 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate readfilez 0.2.1 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate readfilez 0.2.1
[INFO] finished tweaking crates.io crate readfilez 0.2.1
[INFO] tweaked toml for crates.io crate readfilez 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f8db24c86a53f63b9a0ae3de110e2664870ad1902f32bd95d76e39c6aa4a2700
[INFO] running `"docker" "start" "-a" "f8db24c86a53f63b9a0ae3de110e2664870ad1902f32bd95d76e39c6aa4a2700"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling delegate v0.4.2
[INFO] [stderr]    Compiling readfilez v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.92s
[INFO] running `"docker" "inspect" "f8db24c86a53f63b9a0ae3de110e2664870ad1902f32bd95d76e39c6aa4a2700"`
[INFO] running `"docker" "rm" "-f" "f8db24c86a53f63b9a0ae3de110e2664870ad1902f32bd95d76e39c6aa4a2700"`
[INFO] [stdout] f8db24c86a53f63b9a0ae3de110e2664870ad1902f32bd95d76e39c6aa4a2700
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ed89f2777202f529a965c3981cb4ffed2a4e28389e09a8d42096e3bc168d52da
[INFO] running `"docker" "start" "-a" "ed89f2777202f529a965c3981cb4ffed2a4e28389e09a8d42096e3bc168d52da"`
[INFO] [stderr]    Compiling readfilez v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "ed89f2777202f529a965c3981cb4ffed2a4e28389e09a8d42096e3bc168d52da"`
[INFO] running `"docker" "rm" "-f" "ed89f2777202f529a965c3981cb4ffed2a4e28389e09a8d42096e3bc168d52da"`
[INFO] [stdout] ed89f2777202f529a965c3981cb4ffed2a4e28389e09a8d42096e3bc168d52da
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 466886d08a8fdb3a04663f2d8ffcbe5ebea1297922740b79ec1a564bec20f70f
[INFO] running `"docker" "start" "-a" "466886d08a8fdb3a04663f2d8ffcbe5ebea1297922740b79ec1a564bec20f70f"`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/readfilez-ab729d5fb16237f7
[INFO] [stderr]    Doc-tests readfilez
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "466886d08a8fdb3a04663f2d8ffcbe5ebea1297922740b79ec1a564bec20f70f"`
[INFO] running `"docker" "rm" "-f" "466886d08a8fdb3a04663f2d8ffcbe5ebea1297922740b79ec1a564bec20f70f"`
[INFO] [stdout] 466886d08a8fdb3a04663f2d8ffcbe5ebea1297922740b79ec1a564bec20f70f