[INFO] fetching crate frond 0.1.1...
[INFO] documenting frond-0.1.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate frond 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate frond 0.1.1 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frond 0.1.1
[INFO] finished tweaking crates.io crate frond 0.1.1
[INFO] tweaked toml for crates.io crate frond 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate frond 0.1.1 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" "+1.69.0" "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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79cba1c242dd138483648c61bb9ba6c3d3e6dcc06b080df978578c6973a511d2
[INFO] running `Command { std: "docker" "start" "-a" "79cba1c242dd138483648c61bb9ba6c3d3e6dcc06b080df978578c6973a511d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79cba1c242dd138483648c61bb9ba6c3d3e6dcc06b080df978578c6973a511d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79cba1c242dd138483648c61bb9ba6c3d3e6dcc06b080df978578c6973a511d2", kill_on_drop: false }`
[INFO] [stdout] 79cba1c242dd138483648c61bb9ba6c3d3e6dcc06b080df978578c6973a511d2
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 578442d1b96cc25fff5e5ccdebdcb43a1dde9759948ef5cfa1d211b7566399a9
[INFO] running `Command { std: "docker" "start" "-a" "578442d1b96cc25fff5e5ccdebdcb43a1dde9759948ef5cfa1d211b7566399a9", kill_on_drop: false }`
[INFO] [stderr]  Documenting frond v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking frond v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/composite.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |           let mut ret = todo!();
[INFO] [stdout]    |                         ------- any code following this expression is unreachable
[INFO] [stdout] 68 |
[INFO] [stdout] 69 | /         for (key, value) in iter {
[INFO] [stdout] 70 | |             self.assert_key_in_bounds(key);
[INFO] [stdout] 71 | |             todo!()
[INFO] [stdout] 72 | |         }
[INFO] [stdout]    | |_________^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> src/composite.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut ret = todo!();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/composite.rs:69:19
[INFO] [stdout]    |
[INFO] [stdout] 69 |         for (key, value) in iter {
[INFO] [stdout]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/composite.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         iter: I,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/composite.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn merge(&self, rhs: &Composite<A, B>) -> Composite<A, B> {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> src/composite.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         start: std::ops::Bound<&[u8]>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> src/composite.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         end: std::ops::Bound<&[u8]>,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/composite.rs:97:36
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn assert_key_in_bounds(&self, key: Key) {
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/lib.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     fn range<'a>(
[INFO] [stdout] 102 | |         &'a self,
[INFO] [stdout] 103 | |         start: std::ops::Bound<&[u8]>,
[INFO] [stdout] 104 | |         end: std::ops::Bound<&[u8]>,
[INFO] [stdout] 105 | |     ) -> Self::Iter<'a> {
[INFO] [stdout]     | |_______________________^ cannot return without recursing
[INFO] [stdout] 106 |           Composite::range(self, start, end)
[INFO] [stdout]     |           ---------------------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]  --> src/composite.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Iter<'a, A: Interface, B: Interface> {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 9 |     inner: &'a Composite<A, B>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `merge_threshold` is never read
[INFO] [stdout]   --> src/composite.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Composite<A: Interface, B: Interface> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     merge_threshold: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Composite` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `range` is never used
[INFO] [stdout]   --> src/composite.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn range<'a>(
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "578442d1b96cc25fff5e5ccdebdcb43a1dde9759948ef5cfa1d211b7566399a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "578442d1b96cc25fff5e5ccdebdcb43a1dde9759948ef5cfa1d211b7566399a9", kill_on_drop: false }`
[INFO] [stdout] 578442d1b96cc25fff5e5ccdebdcb43a1dde9759948ef5cfa1d211b7566399a9
[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" "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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "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] 27cada63d593d4e6a961c19c68dd1e57e6cd0cb00c7ad80006972b98eb4ffc05
[INFO] running `Command { std: "docker" "start" "-a" "27cada63d593d4e6a961c19c68dd1e57e6cd0cb00c7ad80006972b98eb4ffc05", kill_on_drop: false }`
[INFO] [stderr]  Documenting frond v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "27cada63d593d4e6a961c19c68dd1e57e6cd0cb00c7ad80006972b98eb4ffc05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27cada63d593d4e6a961c19c68dd1e57e6cd0cb00c7ad80006972b98eb4ffc05", kill_on_drop: false }`
[INFO] [stdout] 27cada63d593d4e6a961c19c68dd1e57e6cd0cb00c7ad80006972b98eb4ffc05
