[INFO] fetching crate amp 0.6.2...
[INFO] checking amp-0.6.2 against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] extracting crate amp 0.6.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate amp 0.6.2 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 crates.io crate amp 0.6.2
[INFO] finished tweaking crates.io crate amp 0.6.2
[INFO] tweaked toml for crates.io crate amp 0.6.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate amp 0.6.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded duct v0.10.0
[INFO] [stderr]   Downloaded clipboard v0.4.6
[INFO] [stderr]   Downloaded shared_child v0.3.2
[INFO] [stderr]   Downloaded os_pipe v0.6.1
[INFO] [stderr]   Downloaded luthor v0.1.7
[INFO] [stderr]   Downloaded scribe v0.7.2
[INFO] [stderr]   Downloaded onig v3.2.2
[INFO] [stderr]   Downloaded onig_sys v68.0.1
[INFO] [stderr]   Downloaded syntect v2.1.0
[INFO] [stderr]   Downloaded unicode-segmentation v1.0.3
[INFO] [stderr]   Downloaded fragment v0.3.1
[INFO] [stderr]   Downloaded pad v0.1.5
[INFO] [stderr]   Downloaded bloodhound v0.5.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 05988a719052f7df1640d768af8bc0bfc1d7a8b7fc65aed13912475134e5af3d
[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" "05988a719052f7df1640d768af8bc0bfc1d7a8b7fc65aed13912475134e5af3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05988a719052f7df1640d768af8bc0bfc1d7a8b7fc65aed13912475134e5af3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05988a719052f7df1640d768af8bc0bfc1d7a8b7fc65aed13912475134e5af3d", kill_on_drop: false }`
[INFO] [stdout] 05988a719052f7df1640d768af8bc0bfc1d7a8b7fc65aed13912475134e5af3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 18864ae96c8e808615f1408b34626a4c68a3b6f3abbd6335fc44a63eee7c10f1
[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" "18864ae96c8e808615f1408b34626a4c68a3b6f3abbd6335fc44a63eee7c10f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling plist v0.2.4
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking luthor v0.1.7
[INFO] [stderr]     Checking unicode-segmentation v1.0.3
[INFO] [stderr]     Checking fragment v0.3.1
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking xdg v2.1.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking pad v0.1.5
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking bloodhound v0.5.4
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]     Checking criterion-plot v0.2.3
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.14.2/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-0.14.2/src/expr.rs:1701:12
[INFO] [stdout]      |
[INFO] [stdout] 1701 |       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] 1702 | |            parens!(Punctuated::parse_terminated));
[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-traits v0.1.43
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking itertools-num v0.1.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]     Checking url v2.1.0
[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" "18864ae96c8e808615f1408b34626a4c68a3b6f3abbd6335fc44a63eee7c10f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18864ae96c8e808615f1408b34626a4c68a3b6f3abbd6335fc44a63eee7c10f1", kill_on_drop: false }`
[INFO] [stdout] 18864ae96c8e808615f1408b34626a4c68a3b6f3abbd6335fc44a63eee7c10f1