[INFO] fetching crate wl-tools 0.0.0-alpha.3...
[INFO] checking wl-tools-0.0.0-alpha.3 against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] extracting crate wl-tools 0.0.0-alpha.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate wl-tools 0.0.0-alpha.3
[INFO] finished tweaking crates.io crate wl-tools 0.0.0-alpha.3
[INFO] tweaked toml for crates.io crate wl-tools 0.0.0-alpha.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wl-tools 0.0.0-alpha.3 on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding test-case v2.2.2 (available: v3.3.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e339900048e925da1882e55aa1b06b148d9d75c7e54a3bcac8e3c4b216b96d7a
[INFO] running `Command { std: "docker" "start" "-a" "e339900048e925da1882e55aa1b06b148d9d75c7e54a3bcac8e3c4b216b96d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e339900048e925da1882e55aa1b06b148d9d75c7e54a3bcac8e3c4b216b96d7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e339900048e925da1882e55aa1b06b148d9d75c7e54a3bcac8e3c4b216b96d7a", kill_on_drop: false }`
[INFO] [stdout] e339900048e925da1882e55aa1b06b148d9d75c7e54a3bcac8e3c4b216b96d7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b1fc3a6569a5ba986c819f3385290c1bf3f2b8f81abee90fe3e835f72d11a49
[INFO] running `Command { std: "docker" "start" "-a" "1b1fc3a6569a5ba986c819f3385290c1bf3f2b8f81abee90fe3e835f72d11a49", kill_on_drop: false }`
[INFO] [stderr]     Checking wl-tools v0.0.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stdout] error: struct `WordCharTreeRootNode` is never constructed
[INFO] [stdout]    --> src/tree/word_char.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 | pub struct WordCharTreeRootNode<'a, W> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `char_lowercase` and `idx_range` are never read
[INFO] [stdout]    --> src/tree/word_char.rs:204:5
[INFO] [stdout]     |
[INFO] [stdout] 203 | struct WordCharTreeEdge<'a, W> {
[INFO] [stdout]     |        ---------------- fields in this struct
[INFO] [stdout] 204 |     char_lowercase: char,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 205 |     idx_range: RangeInclusive<usize>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/tree/word_char.rs:198:18
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn words(&self) -> Words<W> {
[INFO] [stdout]     |                  ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn words(&self) -> Words<'_, W> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wl-tools` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1b1fc3a6569a5ba986c819f3385290c1bf3f2b8f81abee90fe3e835f72d11a49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b1fc3a6569a5ba986c819f3385290c1bf3f2b8f81abee90fe3e835f72d11a49", kill_on_drop: false }`
[INFO] [stdout] 1b1fc3a6569a5ba986c819f3385290c1bf3f2b8f81abee90fe3e835f72d11a49
