[INFO] cloning repository https://github.com/kyle-mccarthy/blackjack-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyle-mccarthy/blackjack-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyle-mccarthy%2Fblackjack-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyle-mccarthy%2Fblackjack-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0376d56fda5ff0e43686d79c43a78b9b4e564d0
[INFO] checking kyle-mccarthy/blackjack-rs against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyle-mccarthy%2Fblackjack-rs" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyle-mccarthy/blackjack-rs on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kyle-mccarthy/blackjack-rs
[INFO] finished tweaking git repo https://github.com/kyle-mccarthy/blackjack-rs
[INFO] tweaked toml for git repo https://github.com/kyle-mccarthy/blackjack-rs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/kyle-mccarthy/blackjack-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/gyscos/Cursive`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-map v0.5.0
[INFO] [stderr]   Downloaded array-macro v1.0.3
[INFO] [stderr]   Downloaded enum-map-internals v0.1.2
[INFO] [stderr]   Downloaded enumset v0.3.17
[INFO] [stderr]   Downloaded enumset_derive v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f2456a5b9c2841c57bd2a1c1b74912dc64dd69c4cead568137e6e65d42590e0
[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" "1f2456a5b9c2841c57bd2a1c1b74912dc64dd69c4cead568137e6e65d42590e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f2456a5b9c2841c57bd2a1c1b74912dc64dd69c4cead568137e6e65d42590e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2456a5b9c2841c57bd2a1c1b74912dc64dd69c4cead568137e6e65d42590e0", kill_on_drop: false }`
[INFO] [stdout] 1f2456a5b9c2841c57bd2a1c1b74912dc64dd69c4cead568137e6e65d42590e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93e7ee644c7a45373267cf1be0d244462d1abab2dc84fb0151504aba612082a6
[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" "93e7ee644c7a45373267cf1be0d244462d1abab2dc84fb0151504aba612082a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling cc v1.0.34
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]     Checking array-macro v1.0.3
[INFO] [stderr]     Checking arc-swap v0.3.9
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking strum v0.15.0
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking enum-map-internals v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking signal-hook v0.1.8
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking pancurses v0.16.1
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.14.9/src/parsers.rs:68:48
[INFO] [stdout]      |
[INFO] [stdout] 68   |           fn $name(i: $crate::buffer::Cursor) -> $crate::synom::PResult<$o> {
[INFO] [stdout]      |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found `()`
[INFO] [stdout] 69   |               $submac!(i, $($args)*)
[INFO] [stdout]      |                                    - help: consider removing this semicolon
[INFO] [stdout]      | 
[INFO] [stdout]     ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.14.9/src/expr.rs:1785:12
[INFO] [stdout]      |
[INFO] [stdout] 1785 |       named!(and_call -> (token::Paren, Punctuated<Expr, Token![,]>),
[INFO] [stdout]      |       -      -------- implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]      |  _____|
[INFO] [stdout]      | |
[INFO] [stdout] 1786 | |         parens!(Punctuated::parse_terminated)
[INFO] [stdout] 1787 | |     );
[INFO] [stdout]      | |______- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note:   expected enum `std::result::Result<((Paren, punctuated::Punctuated<expr::Expr, Comma>), buffer::Cursor<'_>), error::ParseError>`
[INFO] [stdout]              found unit type `()`
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "93e7ee644c7a45373267cf1be0d244462d1abab2dc84fb0151504aba612082a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93e7ee644c7a45373267cf1be0d244462d1abab2dc84fb0151504aba612082a6", kill_on_drop: false }`
[INFO] [stdout] 93e7ee644c7a45373267cf1be0d244462d1abab2dc84fb0151504aba612082a6