[INFO] updating cached repository https://github.com/linclark/enigma
[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] 14e791b395256951642844d0f2aa572d99bb7f22
[INFO] checking linclark/enigma against try#e6563ac70cbfd3196492061900e9e9793e065e4d for pr-69410
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinclark%2Fenigma" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  15% (11/70)   
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Checking out files: 100% (70/70), done.
[INFO] validating manifest of git repo https://github.com/linclark/enigma on toolchain e6563ac70cbfd3196492061900e9e9793e065e4d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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 /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/linclark/enigma already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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] 6f4417e15a43402f7d94c7d11974281b397a0365cc39e028f30d995561a238dc
[INFO] running `"docker" "start" "-a" "6f4417e15a43402f7d94c7d11974281b397a0365cc39e028f30d995561a238dc"`
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]     Checking either v1.0.2
[INFO] [stderr]     Checking itertools v0.5.8
[INFO] [stderr]     Checking rand v0.3.15
[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" "6f4417e15a43402f7d94c7d11974281b397a0365cc39e028f30d995561a238dc"`
[INFO] running `"docker" "rm" "-f" "6f4417e15a43402f7d94c7d11974281b397a0365cc39e028f30d995561a238dc"`
[INFO] [stdout] 6f4417e15a43402f7d94c7d11974281b397a0365cc39e028f30d995561a238dc