[INFO] updating cached repository c2hub/pebble
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/c2hub/pebble
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/c2hub/pebble" "work/ex/beta-1.38-1/sources/1.37.0/gh/c2hub/pebble"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/c2hub/pebble'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/c2hub/pebble" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/c2hub/pebble"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/c2hub/pebble'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0200072dbc79f1b2a01c912a72732af19c8c8be6
[INFO] sha for GitHub repo c2hub/pebble: 0200072dbc79f1b2a01c912a72732af19c8c8be6
[INFO] validating manifest of c2hub/pebble on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of c2hub/pebble on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing c2hub/pebble
[INFO] finished frobbing c2hub/pebble
[INFO] frobbed toml for c2hub/pebble written to work/ex/beta-1.38-1/sources/1.37.0/gh/c2hub/pebble/Cargo.toml
[INFO] started frobbing c2hub/pebble
[INFO] finished frobbing c2hub/pebble
[INFO] frobbed toml for c2hub/pebble written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/c2hub/pebble/Cargo.toml
[INFO] crate c2hub/pebble already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing c2hub/pebble against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/c2hub/pebble:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 46a134f1da0a41fb5c6469472c65689cbc3e89024772b08cbd4cbf7247fbaccc
[INFO] running `"docker" "start" "-a" "46a134f1da0a41fb5c6469472c65689cbc3e89024772b08cbd4cbf7247fbaccc"`
[INFO] [stderr]    Compiling gcc v0.3.50
[INFO] [stderr]    Compiling podio v0.1.5
[INFO] [stderr]    Compiling version-compare v0.0.4
[INFO] [stderr]    Compiling lzf v0.3.1
[INFO] [stderr]    Compiling recipe-reader v0.9.11
[INFO] [stderr]    Compiling unicode-bidi v0.3.3
[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] warning[E0621]: explicit lifetime required in the type of `other`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/version-compare-0.0.4/src/version.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 304 |     pub fn compare(&self, other: &Version) -> CompOp {
[INFO] [stderr]     |                                  -------- help: add explicit lifetime `'a` to the type of `other`: `&version::Version<'a>`
[INFO] [stderr] ...
[INFO] [stderr] 308 |             other.parts.iter().peekable()
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ lifetime `'a` required
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling serde_bytes v0.10.0
[INFO] [stderr]    Compiling toml v0.4.1
[INFO] [stderr]    Compiling hyper v0.10.11
[INFO] [stderr]    Compiling idna v0.1.2
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr]    Compiling msdos_time v0.1.5
[INFO] [stderr]    Compiling serde_cbor v0.6.0
[INFO] [stderr]    Compiling pbr v1.0.0
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling bzip2-sys v0.1.5
[INFO] [stderr]    Compiling url v1.4.1
[INFO] [stderr]    Compiling bzip2 v0.3.2
[INFO] [stderr]    Compiling flate2 v0.2.19
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.4.1/src/form_urlencoded.rs:248:40
[INFO] [stderr]     |
[INFO] [stderr] 246 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 247 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 248 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling zip v0.2.3
[INFO] [stderr]    Compiling pebble v0.8.15 (/opt/crater/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" "46a134f1da0a41fb5c6469472c65689cbc3e89024772b08cbd4cbf7247fbaccc"`
[INFO] running `"docker" "rm" "-f" "46a134f1da0a41fb5c6469472c65689cbc3e89024772b08cbd4cbf7247fbaccc"`
[INFO] [stdout] 46a134f1da0a41fb5c6469472c65689cbc3e89024772b08cbd4cbf7247fbaccc