[INFO] cloning repository https://github.com/VladYermakovArchived/hex_ex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VladYermakovArchived/hex_ex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladYermakovArchived%2Fhex_ex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladYermakovArchived%2Fhex_ex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68194260ccea45379c02330bd53962cf496bd5ed
[INFO] documenting VladYermakovArchived/hex_ex against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladYermakovArchived%2Fhex_ex" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VladYermakovArchived/hex_ex on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VladYermakovArchived/hex_ex
[INFO] finished tweaking git repo https://github.com/VladYermakovArchived/hex_ex
[INFO] tweaked toml for git repo https://github.com/VladYermakovArchived/hex_ex written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/VladYermakovArchived/hex_ex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84bfc3e06e56eee66439ce3a1533d8c9e915d9365b39235ff0903c056b7046e8
[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" "84bfc3e06e56eee66439ce3a1533d8c9e915d9365b39235ff0903c056b7046e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84bfc3e06e56eee66439ce3a1533d8c9e915d9365b39235ff0903c056b7046e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84bfc3e06e56eee66439ce3a1533d8c9e915d9365b39235ff0903c056b7046e8", kill_on_drop: false }`
[INFO] [stdout] 84bfc3e06e56eee66439ce3a1533d8c9e915d9365b39235ff0903c056b7046e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0470ec888350fea3c336f0c0f448ee14769965d00a35df7134bf08c30fb98bea
[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" "0470ec888350fea3c336f0c0f448ee14769965d00a35df7134bf08c30fb98bea", kill_on_drop: false }`
[INFO] [stderr]  Documenting he_ex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: destructuring assignments are unstable
[INFO] [stdout]   --> src/main.rs:56:47
[INFO] [stdout]    |
[INFO] [stdout] 56 |             (hot_end[h_num], cold_now[c_num]) = balance(hot_end[h_num], cold_now[c_num], he_ex);
[INFO] [stdout]    |             --------------------------------- ^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             cannot assign to this expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `he_ex`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name he_ex src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0470ec888350fea3c336f0c0f448ee14769965d00a35df7134bf08c30fb98bea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0470ec888350fea3c336f0c0f448ee14769965d00a35df7134bf08c30fb98bea", kill_on_drop: false }`
[INFO] [stdout] 0470ec888350fea3c336f0c0f448ee14769965d00a35df7134bf08c30fb98bea
