[INFO] cloning repository https://github.com/jacklund/matrix-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jacklund/matrix-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacklund%2Fmatrix-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacklund%2Fmatrix-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86f601e3d56b33d42cb65c12a4e415f893b833cd
[INFO] documenting jacklund/matrix-rs 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%2Fjacklund%2Fmatrix-rs" "/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/jacklund/matrix-rs 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/jacklund/matrix-rs
[INFO] finished tweaking git repo https://github.com/jacklund/matrix-rs
[INFO] tweaked toml for git repo https://github.com/jacklund/matrix-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jacklund/matrix-rs 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rocket v0.1.4
[INFO] [stderr]   Downloaded rocket_codegen v0.1.4
[INFO] [stderr]   Downloaded rocket_contrib v0.1.4
[INFO] [stderr]   Downloaded serde_test v0.8.21
[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] 7633d252b2183c5727c97999dc53fa98cdd483aa9f144dc86f86d989761535b8
[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" "7633d252b2183c5727c97999dc53fa98cdd483aa9f144dc86f86d989761535b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7633d252b2183c5727c97999dc53fa98cdd483aa9f144dc86f86d989761535b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7633d252b2183c5727c97999dc53fa98cdd483aa9f144dc86f86d989761535b8", kill_on_drop: false }`
[INFO] [stdout] 7633d252b2183c5727c97999dc53fa98cdd483aa9f144dc86f86d989761535b8
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6d58bf93f4436e63365f49e9a2db6e5c951ca01ded4e75f8c6adb39b70809904
[INFO] running `Command { std: "docker" "start" "-a" "6d58bf93f4436e63365f49e9a2db6e5c951ca01ded4e75f8c6adb39b70809904", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling libc v0.2.18
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]     Checking serde v0.8.21
[INFO] [stderr]    Compiling quote v0.3.10
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]     Checking httparse v1.2.1
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking num_cpus v1.2.0
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]    Compiling syn v0.10.5
[INFO] [stderr]    Compiling rocket_codegen v0.1.4
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[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/rocket_codegen-0.1.4/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rocket_codegen` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6d58bf93f4436e63365f49e9a2db6e5c951ca01ded4e75f8c6adb39b70809904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d58bf93f4436e63365f49e9a2db6e5c951ca01ded4e75f8c6adb39b70809904", kill_on_drop: false }`
[INFO] [stdout] 6d58bf93f4436e63365f49e9a2db6e5c951ca01ded4e75f8c6adb39b70809904
