[INFO] cloning repository https://github.com/hirendoshi/rust_data_structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hirendoshi/rust_data_structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirendoshi%2Frust_data_structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirendoshi%2Frust_data_structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31afb5995066e6e2014fd1a895d3077fd69ba4ad
[INFO] checking hirendoshi/rust_data_structures against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirendoshi%2Frust_data_structures" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hirendoshi/rust_data_structures 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 git repo https://github.com/hirendoshi/rust_data_structures
[INFO] finished tweaking git repo https://github.com/hirendoshi/rust_data_structures
[INFO] tweaked toml for git repo https://github.com/hirendoshi/rust_data_structures written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/hirendoshi/rust_data_structures 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 9655b2a288c5ea3a68084f359ff78572c5be46d5372f66105c51987f22f80693
[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" "9655b2a288c5ea3a68084f359ff78572c5be46d5372f66105c51987f22f80693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9655b2a288c5ea3a68084f359ff78572c5be46d5372f66105c51987f22f80693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9655b2a288c5ea3a68084f359ff78572c5be46d5372f66105c51987f22f80693", kill_on_drop: false }`
[INFO] [stdout] 9655b2a288c5ea3a68084f359ff78572c5be46d5372f66105c51987f22f80693
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 542d28dcf786bd78275e2dbcc9a9f72b4001dc2e9ae079cdd7bb77bfb12c8ed2
[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" "542d28dcf786bd78275e2dbcc9a9f72b4001dc2e9ae079cdd7bb77bfb12c8ed2", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_data_structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "542d28dcf786bd78275e2dbcc9a9f72b4001dc2e9ae079cdd7bb77bfb12c8ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "542d28dcf786bd78275e2dbcc9a9f72b4001dc2e9ae079cdd7bb77bfb12c8ed2", kill_on_drop: false }`
[INFO] [stdout] 542d28dcf786bd78275e2dbcc9a9f72b4001dc2e9ae079cdd7bb77bfb12c8ed2