[INFO] fetching crate b2sum 0.3.0...
[INFO] checking b2sum-0.3.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate b2sum 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate b2sum 0.3.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate b2sum 0.3.0
[INFO] finished tweaking crates.io crate b2sum 0.3.0
[INFO] tweaked toml for crates.io crate b2sum 0.3.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 704468ebe3eae0c389f80f1202ef457720e8d8f9c92ab8daf2711892d8141bf4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "704468ebe3eae0c389f80f1202ef457720e8d8f9c92ab8daf2711892d8141bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "704468ebe3eae0c389f80f1202ef457720e8d8f9c92ab8daf2711892d8141bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704468ebe3eae0c389f80f1202ef457720e8d8f9c92ab8daf2711892d8141bf4", kill_on_drop: false }`
[INFO] [stdout] 704468ebe3eae0c389f80f1202ef457720e8d8f9c92ab8daf2711892d8141bf4
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14934115cd4d4c269fcb3b4d167cbfbeef8d203f38b886a7c13323ee447019e9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "14934115cd4d4c269fcb3b4d167cbfbeef8d203f38b886a7c13323ee447019e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking blake2b_simd v0.5.10
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking error-chain v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]     Checking b2sum v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.44s
[INFO] running `Command { std: "docker" "inspect" "14934115cd4d4c269fcb3b4d167cbfbeef8d203f38b886a7c13323ee447019e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14934115cd4d4c269fcb3b4d167cbfbeef8d203f38b886a7c13323ee447019e9", kill_on_drop: false }`
[INFO] [stdout] 14934115cd4d4c269fcb3b4d167cbfbeef8d203f38b886a7c13323ee447019e9