[INFO] fetching crate signal-backup-decode 0.1.4...
[INFO] documenting signal-backup-decode-0.1.4 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate signal-backup-decode 0.1.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate signal-backup-decode 0.1.4 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signal-backup-decode 0.1.4
[INFO] finished tweaking crates.io crate signal-backup-decode 0.1.4
[INFO] tweaked toml for crates.io crate signal-backup-decode 0.1.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate signal-backup-decode 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded protoc-rust v1.6.0
[INFO] [stderr]   Downloaded protobuf-codegen v1.6.0
[INFO] [stderr]   Downloaded protobuf v1.6.0
[INFO] [stderr]   Downloaded rust-ini v0.11.0
[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" "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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48bf4ba849a07b4876ef7a6d87b2f8b4b0bbd691f9bb1596b41e77e3ab168baa
[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" "48bf4ba849a07b4876ef7a6d87b2f8b4b0bbd691f9bb1596b41e77e3ab168baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48bf4ba849a07b4876ef7a6d87b2f8b4b0bbd691f9bb1596b41e77e3ab168baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48bf4ba849a07b4876ef7a6d87b2f8b4b0bbd691f9bb1596b41e77e3ab168baa", kill_on_drop: false }`
[INFO] [stdout] 48bf4ba849a07b4876ef7a6d87b2f8b4b0bbd691f9bb1596b41e77e3ab168baa
[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" "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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11d9db0fcf37cf68e9661da10310cb9a171f657730a26704d324f20611083db5
[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" "11d9db0fcf37cf68e9661da10310cb9a171f657730a26704d324f20611083db5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling signal-backup-decode v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking rust-ini v0.11.0
[INFO] [stderr]     Checking protobuf v1.6.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling sqlite3-src v0.2.11
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking sqlite3-sys v0.12.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking sqlite v0.23.9
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]  Documenting signal-backup-decode v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.01s
[INFO] running `Command { std: "docker" "inspect" "11d9db0fcf37cf68e9661da10310cb9a171f657730a26704d324f20611083db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11d9db0fcf37cf68e9661da10310cb9a171f657730a26704d324f20611083db5", kill_on_drop: false }`
[INFO] [stdout] 11d9db0fcf37cf68e9661da10310cb9a171f657730a26704d324f20611083db5