[INFO] cloning repository https://github.com/nrc/rls-analysis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nrc/rls-analysis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Frls-analysis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Frls-analysis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd9939247dae2dbe4c801af4c0c3f82035f88d49
[INFO] documenting nrc/rls-analysis 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%2Fnrc%2Frls-analysis" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrc/rls-analysis 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/nrc/rls-analysis
[INFO] finished tweaking git repo https://github.com/nrc/rls-analysis
[INFO] tweaked toml for git repo https://github.com/nrc/rls-analysis written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/nrc/rls-analysis 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]  Downloading crates ...
[INFO] [stderr]   Downloaded derive-new v0.5.6
[INFO] [stderr]   Downloaded rls-data v0.18.2
[INFO] [stderr]   Downloaded json v0.11.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 02ac225a3fdd81184a330e21aed059bf4d13d91d4432f24a2a56800c849fa238
[INFO] running `Command { std: "docker" "start" "-a" "02ac225a3fdd81184a330e21aed059bf4d13d91d4432f24a2a56800c849fa238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02ac225a3fdd81184a330e21aed059bf4d13d91d4432f24a2a56800c849fa238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02ac225a3fdd81184a330e21aed059bf4d13d91d4432f24a2a56800c849fa238", kill_on_drop: false }`
[INFO] [stdout] 02ac225a3fdd81184a330e21aed059bf4d13d91d4432f24a2a56800c849fa238
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 69f695db9826ff2a3fba1c726e50acc7f4ac86253836221d2720c0cb186d66a4
[INFO] running `Command { std: "docker" "start" "-a" "69f695db9826ff2a3fba1c726e50acc7f4ac86253836221d2720c0cb186d66a4", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.11.13
[INFO] [stderr]     Checking rls-span v0.4.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking fst v0.3.3
[INFO] [stderr]     Checking rls-data v0.18.2
[INFO] [stderr]    Compiling derive-new v0.5.6
[INFO] [stderr]  Documenting rls-analysis v0.16.12 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(type_ascription)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(crate_visibility_modifier)]
[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 `rls-analysis`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name rls_analysis 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 derive_new=/opt/rustwide/target/debug/deps/libderive_new-4441aa7daa795b3b.so --extern fst=/opt/rustwide/target/debug/deps/libfst-44ddaa7f856d5b67.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-bd299cb6b226ea4a.rmeta --extern json=/opt/rustwide/target/debug/deps/libjson-3901c54c3f4673c0.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c2820ce931b86e08.rmeta --extern rls_data=/opt/rustwide/target/debug/deps/librls_data-1df94e215170752c.rmeta --extern rls_span=/opt/rustwide/target/debug/deps/librls_span-a4386db7c3daf0fb.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-eddfb9427ca0b1f2.rmeta --cap-lints=warn --crate-version 0.16.12` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "69f695db9826ff2a3fba1c726e50acc7f4ac86253836221d2720c0cb186d66a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69f695db9826ff2a3fba1c726e50acc7f4ac86253836221d2720c0cb186d66a4", kill_on_drop: false }`
[INFO] [stdout] 69f695db9826ff2a3fba1c726e50acc7f4ac86253836221d2720c0cb186d66a4