[INFO] cloning repository https://github.com/vasily-kirichenko/failure_perf_issue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vasily-kirichenko/failure_perf_issue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvasily-kirichenko%2Ffailure_perf_issue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvasily-kirichenko%2Ffailure_perf_issue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd2d108809f03ee3a02636d8c184f5f731abe8c4
[INFO] documenting vasily-kirichenko/failure_perf_issue against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvasily-kirichenko%2Ffailure_perf_issue" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vasily-kirichenko/failure_perf_issue 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/vasily-kirichenko/failure_perf_issue
[INFO] finished tweaking git repo https://github.com/vasily-kirichenko/failure_perf_issue
[INFO] tweaked toml for git repo https://github.com/vasily-kirichenko/failure_perf_issue written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/vasily-kirichenko/failure_perf_issue 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 8400a1eed0446410b9dbfaf5c6b14d73ad970576274150f84967ea54302dee7d
[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" "8400a1eed0446410b9dbfaf5c6b14d73ad970576274150f84967ea54302dee7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8400a1eed0446410b9dbfaf5c6b14d73ad970576274150f84967ea54302dee7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8400a1eed0446410b9dbfaf5c6b14d73ad970576274150f84967ea54302dee7d", kill_on_drop: false }`
[INFO] [stdout] 8400a1eed0446410b9dbfaf5c6b14d73ad970576274150f84967ea54302dee7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5bb07e29c752233def11fda0c295e9c1f9ba54f4373e6a6cd52700f3055fcc00
[INFO] running `Command { std: "docker" "start" "-a" "5bb07e29c752233def11fda0c295e9c1f9ba54f4373e6a6cd52700f3055fcc00", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling cc v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking scoped-tls v0.1.1
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking serde v1.0.43
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling proc-macro2 v0.3.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking mime v0.3.5
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]     Checking tokio-timer v0.2.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.2
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio v0.1.5
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]     Checking serde_json v1.0.16
[INFO] [stderr]     Checking hyper v0.11.25
[INFO] [stderr]     Checking backtrace v0.3.6
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]  Documenting failure_perf_issue v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.42s
[INFO] running `Command { std: "docker" "inspect" "5bb07e29c752233def11fda0c295e9c1f9ba54f4373e6a6cd52700f3055fcc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bb07e29c752233def11fda0c295e9c1f9ba54f4373e6a6cd52700f3055fcc00", kill_on_drop: false }`
[INFO] [stdout] 5bb07e29c752233def11fda0c295e9c1f9ba54f4373e6a6cd52700f3055fcc00