[INFO] updating cached repository https://github.com/retep007/rustybox
[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] 66aa7400ecaf7abbdc9136253c3f8a63217bd69b
[INFO] documenting retep007/rustybox against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fretep007%2Frustybox" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/retep007/rustybox 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 git repo https://github.com/retep007/rustybox
[INFO] finished tweaking git repo https://github.com/retep007/rustybox
[INFO] tweaked toml for git repo https://github.com/retep007/rustybox written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/retep007/rustybox 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e9b4f1b3597e97467040f22716a9c7d95b572a2f38888877364bb57c219727cc
[INFO] running `Command { std: "docker" "start" "-a" "e9b4f1b3597e97467040f22716a9c7d95b572a2f38888877364bb57c219727cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9b4f1b3597e97467040f22716a9c7d95b572a2f38888877364bb57c219727cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b4f1b3597e97467040f22716a9c7d95b572a2f38888877364bb57c219727cc", kill_on_drop: false }`
[INFO] [stdout] e9b4f1b3597e97467040f22716a9c7d95b572a2f38888877364bb57c219727cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 714ce811407beeb35b40877889a0052a0456ccbcc613e6064eeb8565a641032a
[INFO] running `Command { std: "docker" "start" "-a" "714ce811407beeb35b40877889a0052a0456ccbcc613e6064eeb8565a641032a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking unicode-segmentation v1.5.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]     Checking rustyline v5.0.4
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]  Documenting crabbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: type ascription is experimental
[INFO] [stdout]   --> src/rcrab.rs:87:28
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 stdin.read(buf: &mut [u8])
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information
[INFO] [stdout]    = help: add `#![feature(type_ascription)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `crabbox`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name crabbox src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-1513116c9373b34a.rmeta --extern ctrlc=/opt/rustwide/target/debug/deps/libctrlc-7824c6378bd3d3b3.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-09ff0832037e5262.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-0aada07bd69e847b.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-a9b3378d916c17e4.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-ec8be4152c46f04d.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-0b0af2b7c90463a2.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-4d8685c9419ed198.so --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-481b15a87a779b3f.rmeta --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-6041a7136f3721b5.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "714ce811407beeb35b40877889a0052a0456ccbcc613e6064eeb8565a641032a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714ce811407beeb35b40877889a0052a0456ccbcc613e6064eeb8565a641032a", kill_on_drop: false }`
[INFO] [stdout] 714ce811407beeb35b40877889a0052a0456ccbcc613e6064eeb8565a641032a