[INFO] cloning repository https://github.com/AlmightyFloppyFish/leaf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlmightyFloppyFish/leaf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fleaf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fleaf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10afeedfb804851da0264a294c268a6a47122b5c
[INFO] documenting AlmightyFloppyFish/leaf against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fleaf" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlmightyFloppyFish/leaf on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlmightyFloppyFish/leaf
[INFO] finished tweaking git repo https://github.com/AlmightyFloppyFish/leaf
[INFO] tweaked toml for git repo https://github.com/AlmightyFloppyFish/leaf written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/AlmightyFloppyFish/leaf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d74c301eab5ab0ef7a149923affba5bb4d6974dd637920a19980d606a2975eb
[INFO] running `Command { std: "docker" "start" "-a" "9d74c301eab5ab0ef7a149923affba5bb4d6974dd637920a19980d606a2975eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d74c301eab5ab0ef7a149923affba5bb4d6974dd637920a19980d606a2975eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d74c301eab5ab0ef7a149923affba5bb4d6974dd637920a19980d606a2975eb", kill_on_drop: false }`
[INFO] [stdout] 9d74c301eab5ab0ef7a149923affba5bb4d6974dd637920a19980d606a2975eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65c06719a224a23726a42eb186e466b5e2053ca717ed7ae0eaad01b8f4cf0480
[INFO] running `Command { std: "docker" "start" "-a" "65c06719a224a23726a42eb186e466b5e2053ca717ed7ae0eaad01b8f4cf0480", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]     Checking lumina-env v0.1.0 (/opt/rustwide/workdir/lumina-env)
[INFO] [stderr]    Compiling beef v0.4.4
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]  Documenting lumina-env v0.1.0 (/opt/rustwide/workdir/lumina-env)
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking lumina-patterns v0.1.0 (/opt/rustwide/workdir/lumina-patterns)
[INFO] [stderr]  Documenting lumina-patterns v0.1.0 (/opt/rustwide/workdir/lumina-patterns)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking lumina-util v0.1.0 (/opt/rustwide/workdir/lumina-util)
[INFO] [stderr]  Documenting lumina-util v0.1.0 (/opt/rustwide/workdir/lumina-util)
[INFO] [stderr]     Checking lumina-typesystem v0.1.0 (/opt/rustwide/workdir/lumina-typesystem)
[INFO] [stderr]  Documenting lumina-typesystem v0.1.0 (/opt/rustwide/workdir/lumina-typesystem)
[INFO] [stdout] warning: unused import: `lumina_util::debug`
[INFO] [stdout]  --> lumina-typesystem/src/genbuffer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lumina_util::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> lumina-typesystem/src/lib.rs:209:36
[INFO] [stdout]     |
[INFO] [stdout] 209 |             IType::Infer => panic!(INFERENCE_ERROR),
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 209 |             IType::Infer => panic!("{}", INFERENCE_ERROR),
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 209 |             IType::Infer => std::panic::panic_any(INFERENCE_ERROR),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling delegate v0.4.2
[INFO] [stderr]    Compiling logos-derive v0.11.5
[INFO] [stderr]     Checking owned_chars v0.3.1
[INFO] [stderr]     Checking logos v0.11.4
[INFO] [stderr]     Checking lumina-tokenizer v0.1.0 (/opt/rustwide/workdir/lumina-tokenizer)
[INFO] [stderr]  Documenting lumina-tokenizer v0.1.0 (/opt/rustwide/workdir/lumina-tokenizer)
[INFO] [stderr]     Checking lumina-parser v0.1.0 (/opt/rustwide/workdir/lumina-parser)
[INFO] [stderr]  Documenting lumina-parser v0.1.0 (/opt/rustwide/workdir/lumina-parser)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> lumina-parser/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_expect_none)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> lumina-parser/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> lumina-parser/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_expect_none)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> lumina-parser/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `lumina-parser`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name lumina_parser lumina-parser/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern colored=/opt/rustwide/target/debug/deps/libcolored-2058a36465a0afcd.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-0afb4b0f5d1f045c.rmeta --extern lumina_env=/opt/rustwide/target/debug/deps/liblumina_env-c1217a94ca590ac5.rmeta --extern lumina_patterns=/opt/rustwide/target/debug/deps/liblumina_patterns-966072d5b5943dfc.rmeta --extern lumina_tokenizer=/opt/rustwide/target/debug/deps/liblumina_tokenizer-e1274340a7865268.rmeta --extern lumina_util=/opt/rustwide/target/debug/deps/liblumina_util-c7a8b002bc021ee1.rmeta --extern take_mut=/opt/rustwide/target/debug/deps/libtake_mut-593de99758a955c8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "65c06719a224a23726a42eb186e466b5e2053ca717ed7ae0eaad01b8f4cf0480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65c06719a224a23726a42eb186e466b5e2053ca717ed7ae0eaad01b8f4cf0480", kill_on_drop: false }`
[INFO] [stdout] 65c06719a224a23726a42eb186e466b5e2053ca717ed7ae0eaad01b8f4cf0480
