[INFO] cloning repository https://github.com/flamingoodev/rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flamingoodev/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflamingoodev%2Frust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflamingoodev%2Frust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 532650d9c30c89e97d3d3a1ff568c509d4754675
[INFO] documenting flamingoodev/rust-learn against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflamingoodev%2Frust-learn" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flamingoodev/rust-learn on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/flamingoodev/rust-learn
[INFO] finished tweaking git repo https://github.com/flamingoodev/rust-learn
[INFO] tweaked toml for git repo https://github.com/flamingoodev/rust-learn written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/flamingoodev/rust-learn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 324236f6602339e5687365f561ab3f481e1db1fc12198697a793f72591942d1b
[INFO] running `Command { std: "docker" "start" "-a" "324236f6602339e5687365f561ab3f481e1db1fc12198697a793f72591942d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "324236f6602339e5687365f561ab3f481e1db1fc12198697a793f72591942d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "324236f6602339e5687365f561ab3f481e1db1fc12198697a793f72591942d1b", kill_on_drop: false }`
[INFO] [stdout] 324236f6602339e5687365f561ab3f481e1db1fc12198697a793f72591942d1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae0bd657e314137e7045c923cf26d8ed5e0a2c04493021f1b75f75b6c7dadf68
[INFO] running `Command { std: "docker" "start" "-a" "ae0bd657e314137e7045c923cf26d8ed5e0a2c04493021f1b75f75b6c7dadf68", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.93
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]     Checking strum v0.24.0
[INFO] [stderr]  Documenting rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/syntax/t_macro.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |         (a > b) => { println!("{} < {}", a, b) }
[INFO] [stdout]    |                    ^^                         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 11 -         (a > b) => { println!("{} < {}", a, b) }
[INFO] [stdout] 11 +         (a > b) => println!("{} < {}", a, b)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]  --> src/rust_quiz/mod.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | /// GitHub：https://github.com/dtolnay/rust-quiz.git
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/dtolnay/rust-quiz.git>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]   = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.35s
[INFO] running `Command { std: "docker" "inspect" "ae0bd657e314137e7045c923cf26d8ed5e0a2c04493021f1b75f75b6c7dadf68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae0bd657e314137e7045c923cf26d8ed5e0a2c04493021f1b75f75b6c7dadf68", kill_on_drop: false }`
[INFO] [stdout] ae0bd657e314137e7045c923cf26d8ed5e0a2c04493021f1b75f75b6c7dadf68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] bc358e5010b3bee3fb5085cd51cfc1f15f7abdb44523f45d9d8f4072afc18155
[INFO] running `Command { std: "docker" "start" "-a" "bc358e5010b3bee3fb5085cd51cfc1f15f7abdb44523f45d9d8f4072afc18155", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.93
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]     Checking strum v0.24.0
[INFO] [stderr]  Documenting rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/syntax/t_macro.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |         (a > b) => { println!("{} < {}", a, b) }
[INFO] [stdout]    |                    ^^                         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 11 -         (a > b) => { println!("{} < {}", a, b) }
[INFO] [stdout] 11 +         (a > b) => println!("{} < {}", a, b)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]  --> src/rust_quiz/mod.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | /// GitHub：https://github.com/dtolnay/rust-quiz.git
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/dtolnay/rust-quiz.git>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]   = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.53s
[INFO] running `Command { std: "docker" "inspect" "bc358e5010b3bee3fb5085cd51cfc1f15f7abdb44523f45d9d8f4072afc18155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc358e5010b3bee3fb5085cd51cfc1f15f7abdb44523f45d9d8f4072afc18155", kill_on_drop: false }`
[INFO] [stdout] bc358e5010b3bee3fb5085cd51cfc1f15f7abdb44523f45d9d8f4072afc18155