[INFO] fetching crate preftool-toml 0.2.0...
[INFO] testing preftool-toml-0.2.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate preftool-toml 0.2.0 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate preftool-toml 0.2.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 60 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: v0.8.23)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded preftool v0.2.0
[INFO] [stderr]   Downloaded preftool-file v0.2.0
[INFO] [stderr]   Downloaded preftool-dirs v0.2.0
[INFO] [stderr]   Downloaded dirs-sys v0.1.0
[INFO] [stderr]   Downloaded caseless v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fffc2cdde8963e0c05e7cabfbb765282262c493b93ea71e946a0deccad17260
[INFO] running `Command { std: "docker" "start" "-a" "9fffc2cdde8963e0c05e7cabfbb765282262c493b93ea71e946a0deccad17260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fffc2cdde8963e0c05e7cabfbb765282262c493b93ea71e946a0deccad17260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fffc2cdde8963e0c05e7cabfbb765282262c493b93ea71e946a0deccad17260", kill_on_drop: false }`
[INFO] [stdout] 9fffc2cdde8963e0c05e7cabfbb765282262c493b93ea71e946a0deccad17260
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 83f14d7be16618447f47cc3d973a2f76ebe1a86afa5c5c3faa94b2fc6570ebfa
[INFO] running `Command { std: "docker" "start" "-a" "83f14d7be16618447f47cc3d973a2f76ebe1a86afa5c5c3faa94b2fc6570ebfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.25
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling tinyvec v1.9.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling slog-scope v4.4.0
[INFO] [stderr]    Compiling slog-stdlog v3.0.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]    Compiling dirs-sys v0.1.0
[INFO] [stderr]    Compiling caseless v0.2.2
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling backtrace v0.3.75
[INFO] [stderr]    Compiling preftool v0.2.0
[INFO] [stderr]    Compiling preftool-dirs v0.2.0
[INFO] [stdout] error: no rules expected `:`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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-1949cf8c6b5b557f/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-1949cf8c6b5b557f/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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "83f14d7be16618447f47cc3d973a2f76ebe1a86afa5c5c3faa94b2fc6570ebfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83f14d7be16618447f47cc3d973a2f76ebe1a86afa5c5c3faa94b2fc6570ebfa", kill_on_drop: false }`
[INFO] [stdout] 83f14d7be16618447f47cc3d973a2f76ebe1a86afa5c5c3faa94b2fc6570ebfa