[INFO] updating cached repository https://github.com/ballpointcarrot/rust-dailyprogrammer [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] fb808a8895000e61b70ca9cccfe9c0e828fbbed0 [INFO] testing ballpointcarrot/rust-dailyprogrammer against 1.38.0 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fballpointcarrot%2Frust-dailyprogrammer" "work/builds/worker-9/source"` [INFO] [stderr] Cloning into 'work/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ballpointcarrot/rust-dailyprogrammer on toolchain 1.38.0 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/ballpointcarrot/rust-dailyprogrammer [INFO] finished tweaking git repo https://github.com/ballpointcarrot/rust-dailyprogrammer [INFO] tweaked toml for git repo https://github.com/ballpointcarrot/rust-dailyprogrammer written to work/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/ballpointcarrot/rust-dailyprogrammer already has a lockfile, it will not be regenerated [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] error: the lock file /big/crater/work/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] the lockfile is outdated, regenerating it [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"` [INFO] [stdout] 58438ae3aea13743c2d89330be069228b12cfa8006a7362d85e717ba36caea4c [INFO] running `"docker" "start" "-a" "58438ae3aea13743c2d89330be069228b12cfa8006a7362d85e717ba36caea4c"` [INFO] [stderr] Compiling 205 v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/datespan.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | #![feature(collections)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/datespan.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | #![feature(core)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/datespan.rs:32:10 [INFO] [stderr] | [INFO] [stderr] 32 | 4...20 => Some(String::from_str("th")), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/datespan.rs:33:11 [INFO] [stderr] | [INFO] [stderr] 33 | 21...31 => ordinal(value % 10), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/datespan.rs:28:19 [INFO] [stderr] | [INFO] [stderr] 28 | 0 => Some(String::from_str("th")), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found enum `std::result::Result` [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::string::String` [INFO] [stderr] found type `std::result::Result` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/datespan.rs:29:19 [INFO] [stderr] | [INFO] [stderr] 29 | 1 => Some(String::from_str("st")), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found enum `std::result::Result` [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::string::String` [INFO] [stderr] found type `std::result::Result` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/datespan.rs:30:19 [INFO] [stderr] | [INFO] [stderr] 30 | 2 => Some(String::from_str("nd")), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found enum `std::result::Result` [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::string::String` [INFO] [stderr] found type `std::result::Result` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/datespan.rs:31:19 [INFO] [stderr] | [INFO] [stderr] 31 | 3 => Some(String::from_str("rd")), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found enum `std::result::Result` [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::string::String` [INFO] [stderr] found type `std::result::Result` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/datespan.rs:32:24 [INFO] [stderr] | [INFO] [stderr] 32 | 4...20 => Some(String::from_str("th")), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found enum `std::result::Result` [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::string::String` [INFO] [stderr] found type `std::result::Result` [INFO] [stderr] [INFO] [stderr] error: aborting due to 7 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0308, E0554. [INFO] [stderr] For more information about an error, try `rustc --explain E0308`. [INFO] [stderr] error: Could not compile `205`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "58438ae3aea13743c2d89330be069228b12cfa8006a7362d85e717ba36caea4c"` [INFO] running `"docker" "rm" "-f" "58438ae3aea13743c2d89330be069228b12cfa8006a7362d85e717ba36caea4c"` [INFO] [stdout] 58438ae3aea13743c2d89330be069228b12cfa8006a7362d85e717ba36caea4c