[INFO] fetching crate microamp-tools 0.1.0-alpha.3...
[INFO] checking microamp-tools-0.1.0-alpha.3 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate microamp-tools 0.1.0-alpha.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate microamp-tools 0.1.0-alpha.3 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 microamp-tools 0.1.0-alpha.3
[INFO] finished tweaking crates.io crate microamp-tools 0.1.0-alpha.3
[INFO] tweaked toml for crates.io crate microamp-tools 0.1.0-alpha.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate microamp-tools 0.1.0-alpha.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f591d5f66f6dbe9998a2a32bad604c9b5db2a3d21b00996fbe2ab1fff5e8a1b3
[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" "f591d5f66f6dbe9998a2a32bad604c9b5db2a3d21b00996fbe2ab1fff5e8a1b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f591d5f66f6dbe9998a2a32bad604c9b5db2a3d21b00996fbe2ab1fff5e8a1b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f591d5f66f6dbe9998a2a32bad604c9b5db2a3d21b00996fbe2ab1fff5e8a1b3", kill_on_drop: false }`
[INFO] [stdout] f591d5f66f6dbe9998a2a32bad604c9b5db2a3d21b00996fbe2ab1fff5e8a1b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7660f4c8287578eda1291057b8ed9c1a7f01af7b147c45860d6dc19ac0c704b9
[INFO] running `Command { std: "docker" "start" "-a" "7660f4c8287578eda1291057b8ed9c1a7f01af7b147c45860d6dc19ac0c704b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking rustc_version v0.2.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking rustc-cfg v0.4.0
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking cargo-project v0.2.2
[INFO] [stderr]     Checking microamp-tools v0.1.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.10s
[INFO] running `Command { std: "docker" "inspect" "7660f4c8287578eda1291057b8ed9c1a7f01af7b147c45860d6dc19ac0c704b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7660f4c8287578eda1291057b8ed9c1a7f01af7b147c45860d6dc19ac0c704b9", kill_on_drop: false }`
[INFO] [stdout] 7660f4c8287578eda1291057b8ed9c1a7f01af7b147c45860d6dc19ac0c704b9