[INFO] updating cached repository https://github.com/c2hub/pebble
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0200072dbc79f1b2a01c912a72732af19c8c8be6
[INFO] testing c2hub/pebble against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc2hub%2Fpebble" "work/builds/worker-10/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/c2hub/pebble on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/c2hub/pebble
[INFO] finished tweaking git repo https://github.com/c2hub/pebble
[INFO] tweaked toml for git repo https://github.com/c2hub/pebble written to work/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/c2hub/pebble already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] bfe80d30e72960722e4555c9a0a886818ae42d412a80314f03a67bcb3ce6b2e9
[INFO] running `"docker" "start" "-a" "bfe80d30e72960722e4555c9a0a886818ae42d412a80314f03a67bcb3ce6b2e9"`
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling gcc v0.3.50
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling serde v1.0.4
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling podio v0.1.5
[INFO] [stderr]    Compiling version-compare v0.0.4
[INFO] [stderr]    Compiling recipe-reader v0.9.11
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling lzf v0.3.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling hyper v0.10.11
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.5.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling idna v0.1.2
[INFO] [stderr]    Compiling bzip2-sys v0.1.5
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling serde_derive_internals v0.15.0
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr]    Compiling msdos_time v0.1.5
[INFO] [stderr]    Compiling pbr v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.4
[INFO] [stderr]    Compiling url v1.4.1
[INFO] [stderr]    Compiling bzip2 v0.3.2
[INFO] [stderr]    Compiling flate2 v0.2.19
[INFO] [stderr]    Compiling zip v0.2.3
[INFO] [stderr]    Compiling serde_bytes v0.10.0
[INFO] [stderr]    Compiling toml v0.4.1
[INFO] [stderr]    Compiling serde_cbor v0.6.0
[INFO] [stderr]    Compiling pebble v0.8.15 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `pebble`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bfe80d30e72960722e4555c9a0a886818ae42d412a80314f03a67bcb3ce6b2e9"`
[INFO] running `"docker" "rm" "-f" "bfe80d30e72960722e4555c9a0a886818ae42d412a80314f03a67bcb3ce6b2e9"`
[INFO] [stdout] bfe80d30e72960722e4555c9a0a886818ae42d412a80314f03a67bcb3ce6b2e9