[INFO] updating cached repository https://github.com/icasdri/ren
[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] 0a61c18a455411552651bac11842b8883ea544c4
[INFO] checking icasdri/ren against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficasdri%2Fren" "/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/icasdri/ren 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/icasdri/ren
[INFO] finished tweaking git repo https://github.com/icasdri/ren
[INFO] tweaked toml for git repo https://github.com/icasdri/ren written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/icasdri/ren already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f44197102da209d9b80a9c450e94242015cf3dc6ede25e323d0aa368e8ae90f4
[INFO] running `"docker" "start" "-a" "f44197102da209d9b80a9c450e94242015cf3dc6ede25e323d0aa368e8ae90f4"`
[INFO] [stderr]     Checking ren v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/renamer.rs:36:37
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let (left, middle, right) = try!(decompose_source(source_pattern, delim)
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/renamer.rs:44:23
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let grouped = try!(Regex::new(grouped_src)
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/renamer.rs:46:19
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let set = try!(RegexSet::new(set_src)
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `renamer::Renamer`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use renamer::Renamer;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/renamer.rs:36:37
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let (left, middle, right) = try!(decompose_source(source_pattern, delim)
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/renamer.rs:44:23
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let grouped = try!(Regex::new(grouped_src)
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/renamer.rs:46:19
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let set = try!(RegexSet::new(set_src)
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `decompose_source`
[INFO] [stderr]   --> src/renamer.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |     use super::{decompose_source};
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `renamer::Renamer`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use renamer::Renamer;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source_pattern`
[INFO] [stderr]   --> src/renamer.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_source_pattern`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target_pattern`
[INFO] [stderr]   --> src/renamer.rs:12:36
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_target_pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `delim`
[INFO] [stderr]   --> src/renamer.rs:12:60
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |                                                            ^^^^^ help: consider prefixing with an underscore: `_delim`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/renamer.rs:45:38
[INFO] [stderr]    |
[INFO] [stderr] 45 | ...                   .map_err(|e| PatternErr { message: "failed to compile grouped regex".to_owned() }));
[INFO] [stderr]    |                                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/renamer.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |                        .map_err(|e| PatternErr { message: "failed to compile regex set".to_owned() }));
[INFO] [stderr]    |                                  ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source_pattern`
[INFO] [stderr]   --> src/renamer.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_source_pattern`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target_pattern`
[INFO] [stderr]   --> src/renamer.rs:12:36
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_target_pattern`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `delim`
[INFO] [stderr]   --> src/renamer.rs:12:60
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |                                                            ^^^^^ help: consider prefixing with an underscore: `_delim`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/renamer.rs:45:38
[INFO] [stderr]    |
[INFO] [stderr] 45 | ...                   .map_err(|e| PatternErr { message: "failed to compile grouped regex".to_owned() }));
[INFO] [stderr]    |                                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/renamer.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |                        .map_err(|e| PatternErr { message: "failed to compile regex set".to_owned() }));
[INFO] [stderr]    |                                  ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/renamer.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PatternErr`
[INFO] [stderr]   --> src/renamer.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct PatternErr {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/renamer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn new(source_pattern: String, delim: char) -> Result<SourcePattern, PatternErr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `decompose_source`
[INFO] [stderr]   --> src/renamer.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn decompose_source(source_pattern: String, delim: char) -> Result<(String, Vec<String>, String), String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/renamer.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(source_pattern: String, target_pattern: String, delim: char) -> Renamer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PatternErr`
[INFO] [stderr]   --> src/renamer.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct PatternErr {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/renamer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn new(source_pattern: String, delim: char) -> Result<SourcePattern, PatternErr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "f44197102da209d9b80a9c450e94242015cf3dc6ede25e323d0aa368e8ae90f4"`
[INFO] running `"docker" "rm" "-f" "f44197102da209d9b80a9c450e94242015cf3dc6ede25e323d0aa368e8ae90f4"`
[INFO] [stdout] f44197102da209d9b80a9c450e94242015cf3dc6ede25e323d0aa368e8ae90f4