[INFO] updating cached repository https://github.com/linclark/enigma
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/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] 14e791b395256951642844d0f2aa572d99bb7f22
[INFO] checking linclark/enigma against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinclark%2Fenigma" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/linclark/enigma on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/linclark/enigma
[INFO] finished tweaking git repo https://github.com/linclark/enigma
[INFO] tweaked toml for git repo https://github.com/linclark/enigma written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/linclark/enigma already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/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=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" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 274d69bbdf6ac0942128f7b21dfb4b509db25534ffbda72f9d1d0603edc97915
[INFO] running `"docker" "start" "-a" "274d69bbdf6ac0942128f7b21dfb4b509db25534ffbda72f9d1d0603edc97915"`
[INFO] [stderr]     Checking ultra v0.3.1 (https://github.com/linclark/ultra#cc71bafb)
[INFO] [stderr] error[E0282]: type annotations needed for `std::vec::Vec<(&str, _)>`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/ultra-e470c45dfa05ab13/cc71baf/src/decrypt.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut qgrams = Vec::new();
[INFO] [stderr]    |             ---------- consider giving `qgrams` the explicit type `std::vec::Vec<(&str, _)>`, with the type parameters specified
[INFO] [stderr] ...
[INFO] [stderr] 26 |             let frequency = (n as f64) / (total as f64);
[INFO] [stderr]    |                             ^^^^^^^^^^ cannot infer type
[INFO] [stderr]    |
[INFO] [stderr]    = note: type must be known at this point
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0282`.
[INFO] [stderr] error: could not compile `ultra`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "274d69bbdf6ac0942128f7b21dfb4b509db25534ffbda72f9d1d0603edc97915"`
[INFO] running `"docker" "rm" "-f" "274d69bbdf6ac0942128f7b21dfb4b509db25534ffbda72f9d1d0603edc97915"`
[INFO] [stdout] 274d69bbdf6ac0942128f7b21dfb4b509db25534ffbda72f9d1d0603edc97915