[INFO] cloning repository https://github.com/Brecert/mc-utils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Brecert/mc-utils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrecert%2Fmc-utils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrecert%2Fmc-utils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f018ce3b12a28f4cf01c02d184639cb39ca2c0c2
[INFO] documenting Brecert/mc-utils 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%2FBrecert%2Fmc-utils" "/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/Brecert/mc-utils 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/Brecert/mc-utils
[INFO] finished tweaking git repo https://github.com/Brecert/mc-utils
[INFO] tweaked toml for git repo https://github.com/Brecert/mc-utils written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Brecert/mc-utils 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/jeremiah-shaulov/nop-json-derive`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded craftping v0.2.1
[INFO] [stderr]   Downloaded css-color-parser2 v1.0.1
[INFO] [stderr]   Downloaded minreq v2.3.1
[INFO] [stderr]   Downloaded textcode v0.2.1
[INFO] [stderr]   Downloaded nop-json v1.0.9
[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" "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] 6a38e2a5839997a372407beac4c05778d6385bac8dc8eee16ac81d50a6a91e1b
[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" "6a38e2a5839997a372407beac4c05778d6385bac8dc8eee16ac81d50a6a91e1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a38e2a5839997a372407beac4c05778d6385bac8dc8eee16ac81d50a6a91e1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a38e2a5839997a372407beac4c05778d6385bac8dc8eee16ac81d50a6a91e1b", kill_on_drop: false }`
[INFO] [stdout] 6a38e2a5839997a372407beac4c05778d6385bac8dc8eee16ac81d50a6a91e1b
[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" "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] 3ee695b777b7daa76ae52dc456c8ef7238fbfd4aca499e088b71f3988f16088b
[INFO] running `Command { std: "docker" "start" "-a" "3ee695b777b7daa76ae52dc456c8ef7238fbfd4aca499e088b71f3988f16088b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking once_cell v1.7.0
[INFO] [stderr]    Compiling serde_json v1.0.63
[INFO] [stderr]    Compiling minreq v2.3.1
[INFO] [stderr]     Checking numtoa v0.2.3
[INFO] [stderr]     Checking textcode v0.2.1
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]     Checking css-color-parser2 v1.0.1
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki-roots v0.18.0
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling binread_derive v1.4.3
[INFO] [stderr]    Compiling nop-json-derive v1.1.4 (https://github.com/jeremiah-shaulov/nop-json-derive?branch=master#6466ffdb)
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking nop-json v1.0.9
[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/nop-json-1.0.9/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking thiserror v1.0.24
[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 `nop-json` 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" "3ee695b777b7daa76ae52dc456c8ef7238fbfd4aca499e088b71f3988f16088b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ee695b777b7daa76ae52dc456c8ef7238fbfd4aca499e088b71f3988f16088b", kill_on_drop: false }`
[INFO] [stdout] 3ee695b777b7daa76ae52dc456c8ef7238fbfd4aca499e088b71f3988f16088b
