[INFO] cloning repository https://github.com/BeaconBrigade/solitaire-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BeaconBrigade/solitaire-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeaconBrigade%2Fsolitaire-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeaconBrigade%2Fsolitaire-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70c347d9a2c3edbddfcc2630d6be0f0d38357260
[INFO] checking BeaconBrigade/solitaire-solver against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeaconBrigade%2Fsolitaire-solver" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BeaconBrigade/solitaire-solver on toolchain 46424fb5054f211ec836c5c03159f92e46bb35ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BeaconBrigade/solitaire-solver
[INFO] finished tweaking git repo https://github.com/BeaconBrigade/solitaire-solver
[INFO] tweaked toml for git repo https://github.com/BeaconBrigade/solitaire-solver written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BeaconBrigade/solitaire-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "a1f86055dab8e6095fc15ab9a96b002dffc41911bb30aeced04e52b910fc02b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1f86055dab8e6095fc15ab9a96b002dffc41911bb30aeced04e52b910fc02b2", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "61e942f44624b3e407b91c3748a38e9b1d5d577c3451720b2504df8281886a67", kill_on_drop: false }`
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[INFO] [stderr]     Checking solitaire-game v0.1.0 (/opt/rustwide/workdir/crates/solitaire-game)
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[INFO] [stderr]     Checking solitaire-solver v0.1.0 (/opt/rustwide/workdir/crates/solitaire-solver)
[INFO] [stdout] error[E0599]: no method named `chain` found for enum `Option<FlatMap<Skip<Enumerate<Iter<'_, ([...; 19], u8)>>>, ..., ...>>` in the current scope
[INFO] [stdout]   --> crates/solitaire-solver/src/common.rs:97:14
[INFO] [stdout]    |
[INFO] [stdout] 95 |           for from in tableau_iter
[INFO] [stdout]    |  _____________________-
[INFO] [stdout] 96 | |             .clone()
[INFO] [stdout] 97 | |             .chain(talon_iter)
[INFO] [stdout]    | |             -^^^^^ `Option<FlatMap<Skip<Enumerate<std::slice::Iter<'_, ([Option<Card>; 19], u8)>>>, Map<Enumerate<std::slice::Iter<'_, Option<Card>>>, {closure@crates/solitaire-solver/src/common.rs:45:33: 45:46}>, {closure@crates/solitaire-solver/src/common.rs:43:31: 43:39}>>` is not an iterator
[INFO] [stdout]    | |_____________|
[INFO] [stdout]    |
[INFO] [stdout]    |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]    |
[INFO] [stdout] 97 |             .into_iter().chain(talon_iter)
[INFO] [stdout]    |              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `solitaire-solver` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `chain` found for enum `Option<FlatMap<Skip<Enumerate<Iter<'_, ([...; 19], u8)>>>, ..., ...>>` in the current scope
[INFO] [stdout]   --> crates/solitaire-solver/src/common.rs:97:14
[INFO] [stdout]    |
[INFO] [stdout] 95 |           for from in tableau_iter
[INFO] [stdout]    |  _____________________-
[INFO] [stdout] 96 | |             .clone()
[INFO] [stdout] 97 | |             .chain(talon_iter)
[INFO] [stdout]    | |             -^^^^^ `Option<FlatMap<Skip<Enumerate<std::slice::Iter<'_, ([Option<Card>; 19], u8)>>>, Map<Enumerate<std::slice::Iter<'_, Option<Card>>>, {closure@crates/solitaire-solver/src/common.rs:45:33: 45:46}>, {closure@crates/solitaire-solver/src/common.rs:43:31: 43:39}>>` is not an iterator
[INFO] [stdout]    | |_____________|
[INFO] [stdout]    |
[INFO] [stdout]    |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]    |
[INFO] [stdout] 97 |             .into_iter().chain(talon_iter)
[INFO] [stdout]    |              ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `solitaire-solver` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "61e942f44624b3e407b91c3748a38e9b1d5d577c3451720b2504df8281886a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61e942f44624b3e407b91c3748a38e9b1d5d577c3451720b2504df8281886a67", kill_on_drop: false }`
[INFO] [stdout] 61e942f44624b3e407b91c3748a38e9b1d5d577c3451720b2504df8281886a67
