[INFO] updating cached repository https://github.com/eminence/snapshot_trim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1bb505cdca364d322f9268fbc7a284734044a4b
[INFO] documenting eminence/snapshot_trim against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feminence%2Fsnapshot_trim" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eminence/snapshot_trim on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eminence/snapshot_trim
[INFO] finished tweaking git repo https://github.com/eminence/snapshot_trim
[INFO] tweaked toml for git repo https://github.com/eminence/snapshot_trim written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/eminence/snapshot_trim already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37e2c7e466bccca5d12f279f0e26aee4f87964eef51cd3e34ad1fad08252459e
[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" "37e2c7e466bccca5d12f279f0e26aee4f87964eef51cd3e34ad1fad08252459e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37e2c7e466bccca5d12f279f0e26aee4f87964eef51cd3e34ad1fad08252459e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37e2c7e466bccca5d12f279f0e26aee4f87964eef51cd3e34ad1fad08252459e", kill_on_drop: false }`
[INFO] [stdout] 37e2c7e466bccca5d12f279f0e26aee4f87964eef51cd3e34ad1fad08252459e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8e9d70f746c95d5ce6c1d1ef178f92ad6dea66d1ae4e05e44eabe7c21e76979
[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" "c8e9d70f746c95d5ce6c1d1ef178f92ad6dea66d1ae4e05e44eabe7c21e76979", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking regex v0.2.3
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking toml v0.4.5
[INFO] [stderr]  Documenting snapshot_trim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.27s
[INFO] running `Command { std: "docker" "inspect" "c8e9d70f746c95d5ce6c1d1ef178f92ad6dea66d1ae4e05e44eabe7c21e76979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8e9d70f746c95d5ce6c1d1ef178f92ad6dea66d1ae4e05e44eabe7c21e76979", kill_on_drop: false }`
[INFO] [stdout] c8e9d70f746c95d5ce6c1d1ef178f92ad6dea66d1ae4e05e44eabe7c21e76979