[INFO] cloning repository https://github.com/mattdowdell/cactus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattdowdell/cactus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattdowdell%2Fcactus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattdowdell%2Fcactus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a08c4cbcdb867a76385265ecd08c78fdc98318ff
[INFO] documenting mattdowdell/cactus against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattdowdell%2Fcactus" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattdowdell/cactus on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mattdowdell/cactus
[INFO] finished tweaking git repo https://github.com/mattdowdell/cactus
[INFO] tweaked toml for git repo https://github.com/mattdowdell/cactus written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mattdowdell/cactus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9125105da65d3198d426565d5efb9d227cdb797eb2a15a7e68bfd902ab06c13
[INFO] running `Command { std: "docker" "start" "-a" "f9125105da65d3198d426565d5efb9d227cdb797eb2a15a7e68bfd902ab06c13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9125105da65d3198d426565d5efb9d227cdb797eb2a15a7e68bfd902ab06c13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9125105da65d3198d426565d5efb9d227cdb797eb2a15a7e68bfd902ab06c13", kill_on_drop: false }`
[INFO] [stdout] f9125105da65d3198d426565d5efb9d227cdb797eb2a15a7e68bfd902ab06c13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c1cf55e1967df65b1a8431ff60b5d732903eb12e4989590e7a5aca09cbc8fe7
[INFO] running `Command { std: "docker" "start" "-a" "6c1cf55e1967df65b1a8431ff60b5d732903eb12e4989590e7a5aca09cbc8fe7", kill_on_drop: false }`
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking cactus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting cactus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/bytecode/eval/evaluator.rs:412:8
[INFO] [stdout]     |
[INFO] [stdout] 410 |                     match &self.return_register {
[INFO] [stdout]     |                           --------------------- immutable borrow occurs here
[INFO] [stdout] 411 |                         Some(item) => {
[INFO] [stdout] 412 |                             self.push(item.clone());
[INFO] [stdout]     |                             ^^^^^^^^^^------------^
[INFO] [stdout]     |                             |         |
[INFO] [stdout]     |                             |         immutable borrow later used here
[INFO] [stdout]     |                             mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.90s
[INFO] running `Command { std: "docker" "inspect" "6c1cf55e1967df65b1a8431ff60b5d732903eb12e4989590e7a5aca09cbc8fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1cf55e1967df65b1a8431ff60b5d732903eb12e4989590e7a5aca09cbc8fe7", kill_on_drop: false }`
[INFO] [stdout] 6c1cf55e1967df65b1a8431ff60b5d732903eb12e4989590e7a5aca09cbc8fe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 80bbf932dcc0d2ac2eaaad541a9635e0d3eb61600db5a52f1cff5542913b404d
[INFO] running `Command { std: "docker" "start" "-a" "80bbf932dcc0d2ac2eaaad541a9635e0d3eb61600db5a52f1cff5542913b404d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]  Documenting cactus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.21s
[INFO] running `Command { std: "docker" "inspect" "80bbf932dcc0d2ac2eaaad541a9635e0d3eb61600db5a52f1cff5542913b404d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80bbf932dcc0d2ac2eaaad541a9635e0d3eb61600db5a52f1cff5542913b404d", kill_on_drop: false }`
[INFO] [stdout] 80bbf932dcc0d2ac2eaaad541a9635e0d3eb61600db5a52f1cff5542913b404d