[INFO] cloning repository https://github.com/tonyb983/term-println
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tonyb983/term-println" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonyb983%2Fterm-println", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonyb983%2Fterm-println'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 486f87322d95b2bf34a79bf445fa4dbfe902def3
[INFO] documenting tonyb983/term-println against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonyb983%2Fterm-println" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tonyb983/term-println on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tonyb983/term-println
[INFO] finished tweaking git repo https://github.com/tonyb983/term-println
[INFO] tweaked toml for git repo https://github.com/tonyb983/term-println written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/tonyb983/term-println already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/tonyb983/ansirs`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e53d16941788b059b07fe7ebd4c270a8827cb732042db889e9bf7016a52a7712
[INFO] running `Command { std: "docker" "start" "-a" "e53d16941788b059b07fe7ebd4c270a8827cb732042db889e9bf7016a52a7712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e53d16941788b059b07fe7ebd4c270a8827cb732042db889e9bf7016a52a7712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e53d16941788b059b07fe7ebd4c270a8827cb732042db889e9bf7016a52a7712", kill_on_drop: false }`
[INFO] [stdout] e53d16941788b059b07fe7ebd4c270a8827cb732042db889e9bf7016a52a7712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2369c5b40a008a858f52698b8ebddec6884b174ddc8f003838ea6d0b644d3b26
[INFO] running `Command { std: "docker" "start" "-a" "2369c5b40a008a858f52698b8ebddec6884b174ddc8f003838ea6d0b644d3b26", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking ansirs v0.1.3 (https://github.com/tonyb983/ansirs#bab04819)
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]  Documenting fmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(round_char_boundary)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `fmt`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name fmt src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0170857ed1b3c1e3 -L dependency=/opt/rustwide/target/debug/deps --extern ansirs=/opt/rustwide/target/debug/deps/libansirs-162c22b9c41af405.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-e14ab7d5dc83d37b.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-cb768725e26a3b91.rmeta --extern terminal_size=/opt/rustwide/target/debug/deps/libterminal_size-5abe7a42541cbaaa.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-6b6dfc73d9148d18.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2369c5b40a008a858f52698b8ebddec6884b174ddc8f003838ea6d0b644d3b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2369c5b40a008a858f52698b8ebddec6884b174ddc8f003838ea6d0b644d3b26", kill_on_drop: false }`
[INFO] [stdout] 2369c5b40a008a858f52698b8ebddec6884b174ddc8f003838ea6d0b644d3b26