[INFO] cloning repository https://github.com/linclark/enigma
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/linclark/enigma" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinclark%2Fenigma", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinclark%2Fenigma'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14e791b395256951642844d0f2aa572d99bb7f22
[INFO] checking linclark/enigma against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinclark%2Fenigma" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
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Updating files: 100% (70/70), done.
[INFO] validating manifest of git repo https://github.com/linclark/enigma on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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 `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9b55e8ab9bb3dd16c9138762d290fdde694bd660ed1e6c885a2282b812147e9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a9b55e8ab9bb3dd16c9138762d290fdde694bd660ed1e6c885a2282b812147e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9b55e8ab9bb3dd16c9138762d290fdde694bd660ed1e6c885a2282b812147e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9b55e8ab9bb3dd16c9138762d290fdde694bd660ed1e6c885a2282b812147e9", kill_on_drop: false }`
[INFO] [stdout] a9b55e8ab9bb3dd16c9138762d290fdde694bd660ed1e6c885a2282b812147e9
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bb3c8079f7bd64d7ede0939d299bb244f9de0ba0ff06c0e9e6b5c224211d713
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7bb3c8079f7bd64d7ede0939d299bb244f9de0ba0ff06c0e9e6b5c224211d713", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.0.2
[INFO] [stderr]     Checking itertools v0.5.8
[INFO] [stderr]     Checking ultra v0.3.1 (https://github.com/linclark/ultra#cc71bafb)
[INFO] [stdout] error[E0282]: type annotations needed for `Vec<(&str, _)>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/ultra-e470c45dfa05ab13/cc71baf/src/decrypt.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut qgrams = Vec::new();
[INFO] [stdout]    |             ---------- consider giving `qgrams` the explicit type `Vec<(&str, _)>`, with the type parameters specified
[INFO] [stdout] ...
[INFO] [stdout] 26 |             let frequency = (n as f64) / (total as f64);
[INFO] [stdout]    |                             ^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: type must be known at this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ultra`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7bb3c8079f7bd64d7ede0939d299bb244f9de0ba0ff06c0e9e6b5c224211d713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bb3c8079f7bd64d7ede0939d299bb244f9de0ba0ff06c0e9e6b5c224211d713", kill_on_drop: false }`
[INFO] [stdout] 7bb3c8079f7bd64d7ede0939d299bb244f9de0ba0ff06c0e9e6b5c224211d713