[INFO] cloning repository https://github.com/FallibleVagrant/fvtree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FallibleVagrant/fvtree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFallibleVagrant%2Ffvtree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFallibleVagrant%2Ffvtree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a158e09dc012d63ae1aff6caf595016d0e54fe88
[INFO] documenting FallibleVagrant/fvtree against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFallibleVagrant%2Ffvtree" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FallibleVagrant/fvtree on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FallibleVagrant/fvtree
[INFO] finished tweaking git repo https://github.com/FallibleVagrant/fvtree
[INFO] tweaked toml for git repo https://github.com/FallibleVagrant/fvtree written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FallibleVagrant/fvtree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5192392fc2b6d7b5cc172f9d4d66486ec328692a9540c7434db288690d8b568
[INFO] running `Command { std: "docker" "start" "-a" "b5192392fc2b6d7b5cc172f9d4d66486ec328692a9540c7434db288690d8b568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5192392fc2b6d7b5cc172f9d4d66486ec328692a9540c7434db288690d8b568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5192392fc2b6d7b5cc172f9d4d66486ec328692a9540c7434db288690d8b568", kill_on_drop: false }`
[INFO] [stdout] b5192392fc2b6d7b5cc172f9d4d66486ec328692a9540c7434db288690d8b568
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aee0e193e2c8f37151342200ee2520fbc1bf697b5ba1eeb8bb2123266df3df0e
[INFO] running `Command { std: "docker" "start" "-a" "aee0e193e2c8f37151342200ee2520fbc1bf697b5ba1eeb8bb2123266df3df0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[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 text_canvas v0.1.0 (/opt/rustwide/workdir/text_canvas)
[INFO] [stderr]  Documenting text_canvas v0.1.0 (/opt/rustwide/workdir/text_canvas)
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking fvtree v0.1.0 (/opt/rustwide/workdir/fvtree)
[INFO] [stderr]  Documenting fvtree v0.1.0 (/opt/rustwide/workdir/fvtree)
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> fvtree/src/tree_gen_recursive.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TreeStats`
[INFO] [stdout]  --> fvtree/src/tree_gen_recursive.rs:4:39
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::confstats::{Stats, Config, TreeStats, BranchStats};
[INFO] [stdout]   |                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> fvtree/src/tree_gen_recursive.rs:161:5
[INFO] [stdout]     |
[INFO] [stdout] 161 |     while true {
[INFO] [stdout]     |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `gen_default_bias` and `add_with_bias` are never used
[INFO] [stdout]   --> fvtree/src/choose_amongst.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<T: Copy + Debug> Lottery<'_, T> {
[INFO] [stdout]    | ------------------------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn gen_default_bias(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn add_with_bias(&mut self, outcome: T, bias: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting fvt v0.1.0 (/opt/rustwide/workdir/fvt)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/common/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/fvt/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/fvtree/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/text_canvas/index.html
[INFO] running `Command { std: "docker" "inspect" "aee0e193e2c8f37151342200ee2520fbc1bf697b5ba1eeb8bb2123266df3df0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aee0e193e2c8f37151342200ee2520fbc1bf697b5ba1eeb8bb2123266df3df0e", kill_on_drop: false }`
[INFO] [stdout] aee0e193e2c8f37151342200ee2520fbc1bf697b5ba1eeb8bb2123266df3df0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44991b3c547d2e25827a478cea9add7345aa64c9ecc83535481338f50cda23a3
[INFO] running `Command { std: "docker" "start" "-a" "44991b3c547d2e25827a478cea9add7345aa64c9ecc83535481338f50cda23a3", 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" "44991b3c547d2e25827a478cea9add7345aa64c9ecc83535481338f50cda23a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44991b3c547d2e25827a478cea9add7345aa64c9ecc83535481338f50cda23a3", kill_on_drop: false }`
[INFO] [stdout] 44991b3c547d2e25827a478cea9add7345aa64c9ecc83535481338f50cda23a3
