[INFO] crate grcov 0.5.15 is already in cache
[INFO] documenting grcov-0.5.15 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate grcov 0.5.15 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate grcov 0.5.15 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking crates.io crate grcov 0.5.15
[INFO] finished tweaking crates.io crate grcov 0.5.15
[INFO] tweaked toml for crates.io crate grcov 0.5.15 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate grcov 0.5.15 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 887e7a1ff8bd112764d469796f62ea954c49671af1c7665c1e33c40df68ba71f
[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" "887e7a1ff8bd112764d469796f62ea954c49671af1c7665c1e33c40df68ba71f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "887e7a1ff8bd112764d469796f62ea954c49671af1c7665c1e33c40df68ba71f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887e7a1ff8bd112764d469796f62ea954c49671af1c7665c1e33c40df68ba71f", kill_on_drop: false }`
[INFO] [stdout] 887e7a1ff8bd112764d469796f62ea954c49671af1c7665c1e33c40df68ba71f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] a793af472149417d8331fe8974823de39bd5643afb82dff5f05b14cb71d137de
[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" "a793af472149417d8331fe8974823de39bd5643afb82dff5f05b14cb71d137de", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling log v0.4.10
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking fomat-macros v0.3.1
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking msdos_time v0.1.6
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking quick-xml v0.18.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking simplelog v0.7.6
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking zip v0.4.2
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]  Documenting grcov v0.5.15 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.33s
[INFO] running `Command { std: "docker" "inspect" "a793af472149417d8331fe8974823de39bd5643afb82dff5f05b14cb71d137de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a793af472149417d8331fe8974823de39bd5643afb82dff5f05b14cb71d137de", kill_on_drop: false }`
[INFO] [stdout] a793af472149417d8331fe8974823de39bd5643afb82dff5f05b14cb71d137de