[INFO] cloning repository https://github.com/srijs/cargo-cross
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/srijs/cargo-cross" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrijs%2Fcargo-cross", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrijs%2Fcargo-cross'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbb792e7ba4d8d0ce1cf67e764f0df3fd394ecc6
[INFO] checking srijs/cargo-cross against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrijs%2Fcargo-cross" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/srijs/cargo-cross 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/srijs/cargo-cross
[INFO] finished tweaking git repo https://github.com/srijs/cargo-cross
[INFO] tweaked toml for git repo https://github.com/srijs/cargo-cross written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/srijs/cargo-cross 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]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 643a31a80e2099fafcdff53bebec7b90e0b1da52f4f409b9897bbbdfced7447e
[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" "643a31a80e2099fafcdff53bebec7b90e0b1da52f4f409b9897bbbdfced7447e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "643a31a80e2099fafcdff53bebec7b90e0b1da52f4f409b9897bbbdfced7447e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "643a31a80e2099fafcdff53bebec7b90e0b1da52f4f409b9897bbbdfced7447e", kill_on_drop: false }`
[INFO] [stdout] 643a31a80e2099fafcdff53bebec7b90e0b1da52f4f409b9897bbbdfced7447e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 039f2f65e236187ab592e58850332233d9bb6d03c0a5b028277d0bfa62d957f4
[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" "039f2f65e236187ab592e58850332233d9bb6d03c0a5b028277d0bfa62d957f4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]    Compiling unicode-xid v0.1.0
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[INFO] [stderr]    Compiling num-traits v0.2.5
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[INFO] [stderr]    Compiling serde v1.0.75
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[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking lazy_static v0.2.11
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[INFO] [stderr]     Checking remove_dir_all v0.5.1
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[INFO] [stderr]     Checking termcolor v1.0.2
[INFO] [stderr]     Checking unicode-segmentation v1.2.1
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[INFO] [stderr]     Checking platforms v0.1.4
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]     Checking rand v0.4.3
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[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking xattr v0.2.2
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[INFO] [stderr]     Checking log v0.4.4
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[INFO] [stderr]     Checking regex-syntax v0.6.2
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[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking predicates-tree v0.9.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking heck v0.3.0
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking aho-corasick v0.6.7
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking combine v3.5.1
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking tar v0.4.16
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking http v0.1.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling libz-sys v1.0.20
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling curl-sys v0.4.8
[INFO] [stderr]    Compiling lzma-sys v0.1.10
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking tempfile v3.0.3
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking xz2 v0.1.5
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.9
[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 regex v0.2.11
[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" "039f2f65e236187ab592e58850332233d9bb6d03c0a5b028277d0bfa62d957f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "039f2f65e236187ab592e58850332233d9bb6d03c0a5b028277d0bfa62d957f4", kill_on_drop: false }`
[INFO] [stdout] 039f2f65e236187ab592e58850332233d9bb6d03c0a5b028277d0bfa62d957f4