[INFO] cloning repository https://github.com/sapir/msp430emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sapir/msp430emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsapir%2Fmsp430emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsapir%2Fmsp430emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e66ae38837a31bce54ac89cee2480b210506790
[INFO] documenting sapir/msp430emu against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsapir%2Fmsp430emu" "/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/sapir/msp430emu on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sapir/msp430emu
[INFO] finished tweaking git repo https://github.com/sapir/msp430emu
[INFO] tweaked toml for git repo https://github.com/sapir/msp430emu written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sapir/msp430emu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc-impl v0.3.5
[INFO] [stderr]   Downloaded unindent v0.1.5
[INFO] [stderr]   Downloaded indoc v0.3.5
[INFO] [stderr]   Downloaded paste-impl v0.1.8
[INFO] [stderr]   Downloaded paste v0.1.8
[INFO] [stderr]   Downloaded pyo3cls v0.9.1
[INFO] [stderr]   Downloaded pyo3 v0.9.1
[INFO] [stderr]   Downloaded gdbstub v0.1.2
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.9.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fc567373429eea9aeac9cb68c2d5c36caaf8db2bd7e8b8c44742f230cbd61d7
[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" "8fc567373429eea9aeac9cb68c2d5c36caaf8db2bd7e8b8c44742f230cbd61d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fc567373429eea9aeac9cb68c2d5c36caaf8db2bd7e8b8c44742f230cbd61d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc567373429eea9aeac9cb68c2d5c36caaf8db2bd7e8b8c44742f230cbd61d7", kill_on_drop: false }`
[INFO] [stdout] 8fc567373429eea9aeac9cb68c2d5c36caaf8db2bd7e8b8c44742f230cbd61d7
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96e30647d55f8a8d94fdf0a7015b7b19a6dc86686db0ad7739499d1b01f4ddc1
[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" "96e30647d55f8a8d94fdf0a7015b7b19a6dc86686db0ad7739499d1b01f4ddc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling proc-macro-hack v0.5.14
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]     Checking microcorruption-emu-core v0.1.0 (/opt/rustwide/workdir/microcorruption-emu-core)
[INFO] [stderr]  Documenting microcorruption-emu-core v0.1.0 (/opt/rustwide/workdir/microcorruption-emu-core)
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking gdbstub v0.1.2
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.3/src/lib.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                          ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.3/src/lib.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lock_api` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "96e30647d55f8a8d94fdf0a7015b7b19a6dc86686db0ad7739499d1b01f4ddc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96e30647d55f8a8d94fdf0a7015b7b19a6dc86686db0ad7739499d1b01f4ddc1", kill_on_drop: false }`
[INFO] [stdout] 96e30647d55f8a8d94fdf0a7015b7b19a6dc86686db0ad7739499d1b01f4ddc1
