[INFO] cloning repository https://github.com/nbigaouette/dna
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nbigaouette/dna" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbigaouette%2Fdna"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbigaouette%2Fdna'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4fbbec91f3b52f06cb603ef69c9d1283471858b
[INFO] checking nbigaouette/dna against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbigaouette%2Fdna" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nbigaouette/dna 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/nbigaouette/dna
[INFO] finished tweaking git repo https://github.com/nbigaouette/dna
[INFO] tweaked toml for git repo https://github.com/nbigaouette/dna written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/nbigaouette/dna 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-11/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[INFO] the lockfile is outdated, regenerating it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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 573759af13422ce99549e923610dd11e3bcd3d31b02873aa1938881086cfcd4a
[INFO] running `"docker" "start" "-a" "573759af13422ce99549e923610dd11e3bcd3d31b02873aa1938881086cfcd4a"`
[INFO] [stderr]     Checking shellexpand v0.1.0
[INFO] [stderr]     Checking dna v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `nb_steps`
[INFO] [stderr]    --> src/lib.rs:216:9
[INFO] [stderr]     |
[INFO] [stderr] 216 |     let nb_steps = steps.len();
[INFO] [stderr]     |         ^^^^^^^^ help: consider prefixing with an underscore: `_nb_steps`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]    --> src/lib.rs:217:10
[INFO] [stderr]     |
[INFO] [stderr] 217 |     for (idx, step) in steps.into_iter().enumerate() {
[INFO] [stderr]     |          ^^^ help: consider prefixing with an underscore: `_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:220:25
[INFO] [stderr]     |
[INFO] [stderr] 220 |             Step::Echo {name, message} => {
[INFO] [stderr]     |                         ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:224:24
[INFO] [stderr]     |
[INFO] [stderr] 224 |             Step::Run {name, command, arguments, on_success, on_failure} => {
[INFO] [stderr]     |                        ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:270:26
[INFO] [stderr]     |
[INFO] [stderr] 270 |             Step::Shell {name, command, stdout, on_success, on_failure} => {
[INFO] [stderr]     |                          ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]    --> src/lib.rs:291:33
[INFO] [stderr]     |
[INFO] [stderr] 291 |                     Pipe::File {filename} => {
[INFO] [stderr]     |                                 ^^^^^^^^ help: try ignoring the field: `filename: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nb_steps`
[INFO] [stderr]    --> src/lib.rs:216:9
[INFO] [stderr]     |
[INFO] [stderr] 216 |     let nb_steps = steps.len();
[INFO] [stderr]     |         ^^^^^^^^ help: consider prefixing with an underscore: `_nb_steps`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `idx`
[INFO] [stderr]    --> src/lib.rs:217:10
[INFO] [stderr]     |
[INFO] [stderr] 217 |     for (idx, step) in steps.into_iter().enumerate() {
[INFO] [stderr]     |          ^^^ help: consider prefixing with an underscore: `_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:220:25
[INFO] [stderr]     |
[INFO] [stderr] 220 |             Step::Echo {name, message} => {
[INFO] [stderr]     |                         ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:224:24
[INFO] [stderr]     |
[INFO] [stderr] 224 |             Step::Run {name, command, arguments, on_success, on_failure} => {
[INFO] [stderr]     |                        ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:270:26
[INFO] [stderr]     |
[INFO] [stderr] 270 |             Step::Shell {name, command, stdout, on_success, on_failure} => {
[INFO] [stderr]     |                          ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]    --> src/lib.rs:291:33
[INFO] [stderr]     |
[INFO] [stderr] 291 |                     Pipe::File {filename} => {
[INFO] [stderr]     |                                 ^^^^^^^^ help: try ignoring the field: `filename: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Null`
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Null,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `StdErr`
[INFO] [stderr]   --> src/lib.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     StdErr,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `File`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     File {filename: String},
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Null`
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Null,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `StdErr`
[INFO] [stderr]   --> src/lib.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     StdErr,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `File`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     File {filename: String},
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `"docker" "inspect" "573759af13422ce99549e923610dd11e3bcd3d31b02873aa1938881086cfcd4a"`
[INFO] running `"docker" "rm" "-f" "573759af13422ce99549e923610dd11e3bcd3d31b02873aa1938881086cfcd4a"`
[INFO] [stdout] 573759af13422ce99549e923610dd11e3bcd3d31b02873aa1938881086cfcd4a