[INFO] updating cached repository https://github.com/gobanos/dailyprogrammer-rs [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] 273110c12e3f84d8c2475661c5f669024764d30b [INFO] testing gobanos/dailyprogrammer-rs against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobanos%2Fdailyprogrammer-rs" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/gobanos/dailyprogrammer-rs on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/gobanos/dailyprogrammer-rs [INFO] finished tweaking git repo https://github.com/gobanos/dailyprogrammer-rs [INFO] tweaked toml for git repo https://github.com/gobanos/dailyprogrammer-rs written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/gobanos/dailyprogrammer-rs already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 6e811a4dd1b3c6958107abaad36ae09c845cc0779a4e876622921d3f98060836 [INFO] running `"docker" "start" "-a" "6e811a4dd1b3c6958107abaad36ae09c845cc0779a4e876622921d3f98060836"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling dailyprogrammer-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: struct is never constructed: `Hidato` [INFO] [stderr] --> src/bin/h282.rs:54:8 [INFO] [stderr] | [INFO] [stderr] 54 | struct Hidato { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Candidates` [INFO] [stderr] --> src/bin/h282.rs:58:1 [INFO] [stderr] | [INFO] [stderr] 58 | type Candidates = Vec; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Cell` [INFO] [stderr] --> src/bin/h282.rs:60:6 [INFO] [stderr] | [INFO] [stderr] 60 | enum Cell { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `to_base_10` [INFO] [stderr] --> src/bin/e282.rs:97:4 [INFO] [stderr] | [INFO] [stderr] 97 | fn to_base_10(num: &str) -> usize { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `to_base_f` [INFO] [stderr] --> src/bin/e282.rs:113:4 [INFO] [stderr] | [INFO] [stderr] 113 | fn to_base_f(num: usize) -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Base` [INFO] [stderr] --> src/bin/e282.rs:145:6 [INFO] [stderr] | [INFO] [stderr] 145 | enum Base { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/bin/e282.rs:156:5 [INFO] [stderr] | [INFO] [stderr] 156 | fn new() -> Fibonacci { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `parse_input` [INFO] [stderr] --> src/bin/e282.rs:176:4 [INFO] [stderr] | [INFO] [stderr] 176 | fn parse_input() -> Option<(Base, String)> { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope [INFO] [stderr] --> src/bin/e283.rs:96:22 [INFO] [stderr] | [INFO] [stderr] 96 | caps.at(1).unwrap().to_string(), [INFO] [stderr] | ^^ method not found in `regex::Captures<'_>` [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope [INFO] [stderr] --> src/bin/e283.rs:97:22 [INFO] [stderr] | [INFO] [stderr] 97 | caps.at(2).unwrap().to_string(), [INFO] [stderr] | ^^ method not found in `regex::Captures<'_>` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0599`. [INFO] [stderr] error: could not compile `dailyprogrammer-rs`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "6e811a4dd1b3c6958107abaad36ae09c845cc0779a4e876622921d3f98060836"` [INFO] running `"docker" "rm" "-f" "6e811a4dd1b3c6958107abaad36ae09c845cc0779a4e876622921d3f98060836"` [INFO] [stdout] 6e811a4dd1b3c6958107abaad36ae09c845cc0779a4e876622921d3f98060836