[INFO] updating cached repository https://github.com/jabcross/yuck
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e68a87a95cfd447c9455c0148d7e9cf75f364e4e
[INFO] checking jabcross/yuck against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjabcross%2Fyuck" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jabcross/yuck on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jabcross/yuck
[INFO] finished tweaking git repo https://github.com/jabcross/yuck
[INFO] tweaked toml for git repo https://github.com/jabcross/yuck written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jabcross/yuck already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0f5517198db0ed8bc5463f65165d7df6f9b05a3bf6227e388c1f99bac43fc12d
[INFO] running `"docker" "start" "-a" "0f5517198db0ed8bc5463f65165d7df6f9b05a3bf6227e388c1f99bac43fc12d"`
[INFO] [stderr]     Checking yuck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::lexer::*`
[INFO] [stderr]  --> src/node.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::lexer::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Match`
[INFO] [stderr]  --> src/lexer.rs:4:20
[INFO] [stderr]   |
[INFO] [stderr] 4 | use regex::{Regex, Match};
[INFO] [stderr]   |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::lexer::*`
[INFO] [stderr]  --> src/node.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::lexer::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Match`
[INFO] [stderr]  --> src/lexer.rs:4:20
[INFO] [stderr]   |
[INFO] [stderr] 4 | use regex::{Regex, Match};
[INFO] [stderr]   |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current_id` is never read
[INFO] [stderr]   --> src/grammar.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut current_id = "";
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `row` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let mut row = 0;
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_row` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `column` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let mut column = 0;
[INFO] [stderr]    |                 ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_column` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `offset` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut offset = 0;
[INFO] [stderr]    |                 ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_offset` instead
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_as_tree`
[INFO] [stderr]   --> src/node.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn print_as_tree(&self, indent: usize) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pretty_print`
[INFO] [stderr]    --> src/grammar.rs:193:5
[INFO] [stderr]     |
[INFO] [stderr] 193 |     pub fn pretty_print(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current_id` is never read
[INFO] [stderr]   --> src/grammar.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut current_id = "";
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `row` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let mut row = 0;
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_row` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `column` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let mut column = 0;
[INFO] [stderr]    |                 ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_column` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `offset` is assigned to, but never used
[INFO] [stderr]   --> src/lexer.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let mut offset = 0;
[INFO] [stderr]    |                 ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_offset` instead
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_as_tree`
[INFO] [stderr]   --> src/node.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn print_as_tree(&self, indent: usize) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pretty_print`
[INFO] [stderr]    --> src/grammar.rs:193:5
[INFO] [stderr]     |
[INFO] [stderr] 193 |     pub fn pretty_print(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.46s
[INFO] running `"docker" "inspect" "0f5517198db0ed8bc5463f65165d7df6f9b05a3bf6227e388c1f99bac43fc12d"`
[INFO] running `"docker" "rm" "-f" "0f5517198db0ed8bc5463f65165d7df6f9b05a3bf6227e388c1f99bac43fc12d"`
[INFO] [stdout] 0f5517198db0ed8bc5463f65165d7df6f9b05a3bf6227e388c1f99bac43fc12d