[INFO] cloning repository https://github.com/nrc/lseq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nrc/lseq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Flseq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Flseq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a01ffeccd3161b2d64e3648b80b2ee6ea1cf9291
[INFO] documenting nrc/lseq 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%2Flseq" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrc/lseq 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/lseq
[INFO] finished tweaking git repo https://github.com/nrc/lseq
[INFO] tweaked toml for git repo https://github.com/nrc/lseq written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/nrc/lseq 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d5a66abaee7f6446d97c639040fd9407d5e5b506ca66227014a586780d2a5c87
[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" "d5a66abaee7f6446d97c639040fd9407d5e5b506ca66227014a586780d2a5c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5a66abaee7f6446d97c639040fd9407d5e5b506ca66227014a586780d2a5c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5a66abaee7f6446d97c639040fd9407d5e5b506ca66227014a586780d2a5c87", kill_on_drop: false }`
[INFO] [stdout] d5a66abaee7f6446d97c639040fd9407d5e5b506ca66227014a586780d2a5c87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 999e83d8336e43b57a7a01d1f6e16bbc6eaa38270bf301b437f1851c018189ab
[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" "999e83d8336e43b57a7a01d1f6e16bbc6eaa38270bf301b437f1851c018189ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling quote v0.6.5
[INFO] [stderr]    Compiling syn v0.14.7
[INFO] [stderr]     Checking rand v0.5.4
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]  Documenting lseq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_vec_new)]
[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 `lseq`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name lseq 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 bincode=/opt/rustwide/target/debug/deps/libbincode-bdef09562a4a6111.rmeta --extern bit_vec=/opt/rustwide/target/debug/deps/libbit_vec-eda6546e0cda110c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-961ea64dbbd2cefc.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e2c7117cdcbd0b5c.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-02f01cd9fab899de.so --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "999e83d8336e43b57a7a01d1f6e16bbc6eaa38270bf301b437f1851c018189ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999e83d8336e43b57a7a01d1f6e16bbc6eaa38270bf301b437f1851c018189ab", kill_on_drop: false }`
[INFO] [stdout] 999e83d8336e43b57a7a01d1f6e16bbc6eaa38270bf301b437f1851c018189ab