[INFO] cloning repository https://github.com/fluetlang/fluet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fluetlang/fluet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffluetlang%2Ffluet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffluetlang%2Ffluet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c129a4bb04ec56090fc5eb9026b24ca1163df51d
[INFO] documenting fluetlang/fluet 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%2Ffluetlang%2Ffluet" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fluetlang/fluet 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/fluetlang/fluet
[INFO] finished tweaking git repo https://github.com/fluetlang/fluet
[INFO] tweaked toml for git repo https://github.com/fluetlang/fluet written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/fluetlang/fluet 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yansi-term v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 069d38cf5ce77b57c63804078a8ea0c6c0584fe692b6732289abe557213edbdc
[INFO] running `Command { std: "docker" "start" "-a" "069d38cf5ce77b57c63804078a8ea0c6c0584fe692b6732289abe557213edbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "069d38cf5ce77b57c63804078a8ea0c6c0584fe692b6732289abe557213edbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "069d38cf5ce77b57c63804078a8ea0c6c0584fe692b6732289abe557213edbdc", kill_on_drop: false }`
[INFO] [stdout] 069d38cf5ce77b57c63804078a8ea0c6c0584fe692b6732289abe557213edbdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 9f7dd637fc3d13a117879629bb3573aff8f7f16b18d8297e3ee351a9779ffd57
[INFO] running `Command { std: "docker" "start" "-a" "9f7dd637fc3d13a117879629bb3573aff8f7f16b18d8297e3ee351a9779ffd57", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]     Checking yansi-term v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]  Documenting highlighting v0.1.0 (/opt/rustwide/workdir/highlighting)
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking annotate-snippets v0.9.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]  Documenting common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]     Checking lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]  Documenting interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stderr]  Documenting parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]  Documenting lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> interpreter/src/lib.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 129 | /         loop {
[INFO] [stdout] 130 | |             self.env = Rc::new(RefCell::new(Env::from_parent(self.env.clone())));
[INFO] [stdout] 131 | |
[INFO] [stdout] 132 | |             for statement in body {
[INFO] [stdout] ...   |
[INFO] [stdout] 136 | |             self.env = self.env.clone().borrow().parent().unwrap();
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 138 | 
[INFO] [stdout] 139 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking resolver v0.1.0 (/opt/rustwide/workdir/resolver)
[INFO] [stderr]  Documenting resolver v0.1.0 (/opt/rustwide/workdir/resolver)
[INFO] [stderr]  Documenting fluet v0.1.0 (/opt/rustwide/workdir/fluet)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.31s
[INFO] running `Command { std: "docker" "inspect" "9f7dd637fc3d13a117879629bb3573aff8f7f16b18d8297e3ee351a9779ffd57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f7dd637fc3d13a117879629bb3573aff8f7f16b18d8297e3ee351a9779ffd57", kill_on_drop: false }`
[INFO] [stdout] 9f7dd637fc3d13a117879629bb3573aff8f7f16b18d8297e3ee351a9779ffd57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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] bdf4827fe396b312cf9d2794e711f0b927e885bf0361406189311cb8178145da
[INFO] running `Command { std: "docker" "start" "-a" "bdf4827fe396b312cf9d2794e711f0b927e885bf0361406189311cb8178145da", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "bdf4827fe396b312cf9d2794e711f0b927e885bf0361406189311cb8178145da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf4827fe396b312cf9d2794e711f0b927e885bf0361406189311cb8178145da", kill_on_drop: false }`
[INFO] [stdout] bdf4827fe396b312cf9d2794e711f0b927e885bf0361406189311cb8178145da