[INFO] cloning repository https://github.com/ThatsGobbles/cursive-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ThatsGobbles/cursive-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcursive-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcursive-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2370dbb9dc5cd541ca8583b3222035bcd94f282b
[INFO] documenting ThatsGobbles/cursive-test against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcursive-test" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ThatsGobbles/cursive-test on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ThatsGobbles/cursive-test
[INFO] finished tweaking git repo https://github.com/ThatsGobbles/cursive-test
[INFO] tweaked toml for git repo https://github.com/ThatsGobbles/cursive-test written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ThatsGobbles/cursive-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--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 quote v0.6.12
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded smallvec v0.6.9
[INFO] [stderr]   Downloaded num-complex v0.2.1
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded signal-hook v0.1.9
[INFO] [stderr]   Downloaded enum-map-internals v0.1.2
[INFO] [stderr]   Downloaded num-rational v0.2.1
[INFO] [stderr]   Downloaded syn v0.15.34
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded serde v1.0.92
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9668a0093a70678624bd820f495b0daba643f61d2227cf24b0eeecb0b3c80f2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c9668a0093a70678624bd820f495b0daba643f61d2227cf24b0eeecb0b3c80f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9668a0093a70678624bd820f495b0daba643f61d2227cf24b0eeecb0b3c80f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9668a0093a70678624bd820f495b0daba643f61d2227cf24b0eeecb0b3c80f2", kill_on_drop: false }`
[INFO] [stdout] c9668a0093a70678624bd820f495b0daba643f61d2227cf24b0eeecb0b3c80f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e000ab5d6863d8f06cb3521322def04403b6da6ee4bef857923833897620dc59
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e000ab5d6863d8f06cb3521322def04403b6da6ee4bef857923833897620dc59", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking termion v1.5.2
[INFO] [stderr]     Checking num-complex v0.2.1
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling enumset_derive v0.4.0
[INFO] [stderr]     Checking enumset v0.4.0
[INFO] [stderr]     Checking cursive v0.12.0
[INFO] [stderr]  Documenting cursive-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(clamp)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `cursive-test`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name cursive_test 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 cursive=/opt/rustwide/target/debug/deps/libcursive-e2612cecbad167aa.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-f65f82d5ea38b143.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e000ab5d6863d8f06cb3521322def04403b6da6ee4bef857923833897620dc59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e000ab5d6863d8f06cb3521322def04403b6da6ee4bef857923833897620dc59", kill_on_drop: false }`
[INFO] [stdout] e000ab5d6863d8f06cb3521322def04403b6da6ee4bef857923833897620dc59