[INFO] cloning repository https://github.com/micouy/dodo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/micouy/dodo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmicouy%2Fdodo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmicouy%2Fdodo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b960be855efe89c34f13bdd0532ca6e2145db46b
[INFO] documenting micouy/dodo 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%2Fmicouy%2Fdodo" "/workspace/builds/worker-35/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-35/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/micouy/dodo 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/micouy/dodo
[INFO] finished tweaking git repo https://github.com/micouy/dodo
[INFO] tweaked toml for git repo https://github.com/micouy/dodo written to /workspace/builds/worker-35/source/Cargo.toml
[INFO] crate git repo https://github.com/micouy/dodo 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]  Downloading crates ...
[INFO] [stderr]   Downloaded ctor v0.1.15
[INFO] [stderr]   Downloaded dynfmt v0.1.4
[INFO] [stderr]   Downloaded derive-enum-error v0.0.1
[INFO] [stderr]   Downloaded output_vt100 v0.1.2
[INFO] [stderr]   Downloaded erased-serde v0.3.12
[INFO] [stderr]   Downloaded daggy v0.7.0
[INFO] [stderr]   Downloaded indexmap v1.5.1
[INFO] [stderr]   Downloaded pretty_assertions v0.6.1
[INFO] [stderr]   Downloaded syn v1.0.35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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] 080fdb7892b4fb022730718a0468faf0c50878f443d4b95148b1c3d9c58e0bd8
[INFO] running `Command { std: "docker" "start" "-a" "080fdb7892b4fb022730718a0468faf0c50878f443d4b95148b1c3d9c58e0bd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "080fdb7892b4fb022730718a0468faf0c50878f443d4b95148b1c3d9c58e0bd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "080fdb7892b4fb022730718a0468faf0c50878f443d4b95148b1c3d9c58e0bd8", kill_on_drop: false }`
[INFO] [stdout] 080fdb7892b4fb022730718a0468faf0c50878f443d4b95148b1c3d9c58e0bd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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] 76adbb560254f9f2ede4f18daf2e4eb4a4e7e1b65af81bd7bf912e38b1141993
[INFO] running `Command { std: "docker" "start" "-a" "76adbb560254f9f2ede4f18daf2e4eb4a4e7e1b65af81bd7bf912e38b1141993", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling derive-enum-error v0.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking daggy v0.7.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking erased-serde v0.3.12
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking dynfmt v0.1.4
[INFO] [stderr]  Documenting dodo 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(result_flattening)]
[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 `dodo`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name dodo src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=62e1f4456df56036 -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-750966cfa58739ff.rmeta --extern daggy=/opt/rustwide/target/debug/deps/libdaggy-f3a300f203a8592e.rmeta --extern dynfmt=/opt/rustwide/target/debug/deps/libdynfmt-465d0f4c8a2c883a.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-00b4e57797c934e7.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-da09d5877a676e65.rmeta --extern twox_hash=/opt/rustwide/target/debug/deps/libtwox_hash-dc78691e014e3404.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "76adbb560254f9f2ede4f18daf2e4eb4a4e7e1b65af81bd7bf912e38b1141993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76adbb560254f9f2ede4f18daf2e4eb4a4e7e1b65af81bd7bf912e38b1141993", kill_on_drop: false }`
[INFO] [stdout] 76adbb560254f9f2ede4f18daf2e4eb4a4e7e1b65af81bd7bf912e38b1141993