[INFO] fetching crate preftool-toml 0.2.0...
[INFO] checking preftool-toml-0.2.0 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate preftool-toml 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate preftool-toml 0.2.0 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate preftool-toml 0.2.0
[INFO] finished tweaking crates.io crate preftool-toml 0.2.0
[INFO] tweaked toml for crates.io crate preftool-toml 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding slog-stdlog v3.0.5 (available: v4.1.1)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.8.19)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded preftool-dirs v0.2.0
[INFO] [stderr]   Downloaded caseless v0.2.1
[INFO] [stderr]   Downloaded preftool v0.2.0
[INFO] [stderr]   Downloaded dirs-sys v0.1.0
[INFO] [stderr]   Downloaded preftool-file v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a09dd028adc6b6a9e57bf0966d74a6695284c3f1b261618c62a75b28a0c2271
[INFO] running `Command { std: "docker" "start" "-a" "8a09dd028adc6b6a9e57bf0966d74a6695284c3f1b261618c62a75b28a0c2271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a09dd028adc6b6a9e57bf0966d74a6695284c3f1b261618c62a75b28a0c2271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a09dd028adc6b6a9e57bf0966d74a6695284c3f1b261618c62a75b28a0c2271", kill_on_drop: false }`
[INFO] [stdout] 8a09dd028adc6b6a9e57bf0966d74a6695284c3f1b261618c62a75b28a0c2271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57c3dfb76a351d68bc8fd3817285c6d77d03c089214ff62d8e8ffbba82139dbf
[INFO] running `Command { std: "docker" "start" "-a" "57c3dfb76a351d68bc8fd3817285c6d77d03c089214ff62d8e8ffbba82139dbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking tinyvec v1.8.0
[INFO] [stderr]     Checking dirs-sys v0.1.0
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking slog-scope v4.4.0
[INFO] [stderr]     Checking object v0.36.5
[INFO] [stderr]     Checking slog-stdlog v3.0.5
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling caseless v0.2.1
[INFO] [stderr]     Checking preftool v0.2.0
[INFO] [stderr]     Checking preftool-dirs v0.2.0
[INFO] [stdout] error: no rules expected `:`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/preftool-dirs-0.2.0/src/lib.rs:22:34
[INFO] [stdout]    |
[INFO] [stdout] 16 |   macro_rules! vec_opt {
[INFO] [stdout]    |   -------------------- when calling this macro
[INFO] [stdout] ...
[INFO] [stdout] 22 |       1 + vec_opt!(__count $($value:expr,)*)
[INFO] [stdout]    |                                    ^ no rules expected this token in macro call
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/preftool-dirs-0.2.0/src/lin.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let dirs = vec_opt!(
[INFO] [stdout]    |  ______________-
[INFO] [stdout] 19 | |     // XDG config path
[INFO] [stdout] 20 | |     env::var_os("XDG_CONFIG_HOME")
[INFO] [stdout] 21 | |       .and_then(dirs_sys::is_absolute_path)
[INFO] [stdout] ...  |
[INFO] [stdout] 26 | |       .map(|home_dir| home_dir.join(".config").join(&application)),
[INFO] [stdout] 27 | |   );
[INFO] [stdout]    | |___- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] note: while trying to match `,`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/preftool-dirs-0.2.0/src/lib.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 |   (__count $_fst:expr, $($value:expr,)*) => {
[INFO] [stdout]    |                      ^
[INFO] [stdout]    = note: this error originates in the macro `vec_opt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `preftool-dirs` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "57c3dfb76a351d68bc8fd3817285c6d77d03c089214ff62d8e8ffbba82139dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57c3dfb76a351d68bc8fd3817285c6d77d03c089214ff62d8e8ffbba82139dbf", kill_on_drop: false }`
[INFO] [stdout] 57c3dfb76a351d68bc8fd3817285c6d77d03c089214ff62d8e8ffbba82139dbf