[INFO] cloning repository https://github.com/JosephTLyons/prefix_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JosephTLyons/prefix_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephTLyons%2Fprefix_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephTLyons%2Fprefix_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a975905b74f81aa2d1a4ef5c6ed2fac380e1743a
[INFO] checking JosephTLyons/prefix_tree against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephTLyons%2Fprefix_tree" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosephTLyons/prefix_tree on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JosephTLyons/prefix_tree
[INFO] finished tweaking git repo https://github.com/JosephTLyons/prefix_tree
[INFO] tweaked toml for git repo https://github.com/JosephTLyons/prefix_tree written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/JosephTLyons/prefix_tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e063e8a9fa65aa0be9a8cdd2c492ef01269b9809cff4a2b00e85451c3f95fb6
[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" "3e063e8a9fa65aa0be9a8cdd2c492ef01269b9809cff4a2b00e85451c3f95fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e063e8a9fa65aa0be9a8cdd2c492ef01269b9809cff4a2b00e85451c3f95fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e063e8a9fa65aa0be9a8cdd2c492ef01269b9809cff4a2b00e85451c3f95fb6", kill_on_drop: false }`
[INFO] [stdout] 3e063e8a9fa65aa0be9a8cdd2c492ef01269b9809cff4a2b00e85451c3f95fb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c496aecac506e92b446456ef34e95cbd15b808e816a3fc6803de3db3f7d71283
[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" "c496aecac506e92b446456ef34e95cbd15b808e816a3fc6803de3db3f7d71283", kill_on_drop: false }`
[INFO] [stderr]     Checking prefix_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "c496aecac506e92b446456ef34e95cbd15b808e816a3fc6803de3db3f7d71283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c496aecac506e92b446456ef34e95cbd15b808e816a3fc6803de3db3f7d71283", kill_on_drop: false }`
[INFO] [stdout] c496aecac506e92b446456ef34e95cbd15b808e816a3fc6803de3db3f7d71283