[INFO] cloning repository https://github.com/andysalerno/explain_rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andysalerno/explain_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandysalerno%2Fexplain_rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandysalerno%2Fexplain_rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 211aa5f0405032834f15a99ad837b620b173d1e5
[INFO] checking andysalerno/explain_rs against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandysalerno%2Fexplain_rs" "/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/andysalerno/explain_rs on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/andysalerno/explain_rs
[INFO] finished tweaking git repo https://github.com/andysalerno/explain_rs
[INFO] tweaked toml for git repo https://github.com/andysalerno/explain_rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/andysalerno/explain_rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 41b8c9fa794c0e4cd2c8df9eb1fcaea3773f7bcdba950b8f1981bc9cb04776b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "41b8c9fa794c0e4cd2c8df9eb1fcaea3773f7bcdba950b8f1981bc9cb04776b3"`
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking explain_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/simple_parser/tokenizer.rs:7:58
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn tokenize<C: TokenClass>(input: &str, classifier: &TokenGenerator<C>) -> Vec<Token<C>> {
[INFO] [stderr]   |                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TokenGenerator<C>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/simple_parser/tokenizer.rs:7:58
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn tokenize<C: TokenClass>(input: &str, classifier: &TokenGenerator<C>) -> Vec<Token<C>> {
[INFO] [stderr]   |                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TokenGenerator<C>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `difference`
[INFO] [stderr]    --> src/man_parse/term_writer/troff_term_writer.rs:262:13
[INFO] [stderr]     |
[INFO] [stderr] 262 |         let difference = text_start_pos - count_whitespace;
[INFO] [stderr]     |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_difference`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/man_parse/troff_parser.rs:338:13
[INFO] [stderr]     |
[INFO] [stderr] 338 |         let mut pops = if let Some(tok) = decrease_arg {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Underlined`
[INFO] [stderr]   --> src/man_parse/term_writer/font_style.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Underlined,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NonWhitespace`
[INFO] [stderr]  --> src/man_parse/term_writer/line_info.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     NonWhitespace,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `disable_debug`
[INFO] [stderr]   --> src/man_parse/term_writer/troff_term_writer.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn disable_debug(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `indent`
[INFO] [stderr]   --> src/man_parse/term_writer/troff_term_writer.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn indent(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default_indent`
[INFO] [stderr]    --> src/man_parse/term_writer/troff_term_writer.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn default_indent(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `difference`
[INFO] [stderr]    --> src/man_parse/term_writer/troff_term_writer.rs:262:13
[INFO] [stderr]     |
[INFO] [stderr] 262 |         let difference = text_start_pos - count_whitespace;
[INFO] [stderr]     |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_difference`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/man_parse/troff_parser.rs:338:13
[INFO] [stderr]     |
[INFO] [stderr] 338 |         let mut pops = if let Some(tok) = decrease_arg {
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Underlined`
[INFO] [stderr]   --> src/man_parse/term_writer/font_style.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Underlined,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NonWhitespace`
[INFO] [stderr]  --> src/man_parse/term_writer/line_info.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     NonWhitespace,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `disable_debug`
[INFO] [stderr]   --> src/man_parse/term_writer/troff_term_writer.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn disable_debug(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `indent`
[INFO] [stderr]   --> src/man_parse/term_writer/troff_term_writer.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn indent(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default_indent`
[INFO] [stderr]    --> src/man_parse/term_writer/troff_term_writer.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn default_indent(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `"docker" "inspect" "41b8c9fa794c0e4cd2c8df9eb1fcaea3773f7bcdba950b8f1981bc9cb04776b3"`
[INFO] running `"docker" "rm" "-f" "41b8c9fa794c0e4cd2c8df9eb1fcaea3773f7bcdba950b8f1981bc9cb04776b3"`
[INFO] [stdout] 41b8c9fa794c0e4cd2c8df9eb1fcaea3773f7bcdba950b8f1981bc9cb04776b3