[INFO] updating cached repository porglezomp/buddhabrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/porglezomp/buddhabrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/porglezomp/buddhabrot" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/porglezomp/buddhabrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/porglezomp/buddhabrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/porglezomp/buddhabrot" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/porglezomp/buddhabrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/porglezomp/buddhabrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 83d1a88b8df3cea4b66966531814542877231cda
[INFO] sha for GitHub repo porglezomp/buddhabrot: 83d1a88b8df3cea4b66966531814542877231cda
[INFO] validating manifest of porglezomp/buddhabrot on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of porglezomp/buddhabrot on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing porglezomp/buddhabrot
[INFO] finished frobbing porglezomp/buddhabrot
[INFO] frobbed toml for porglezomp/buddhabrot written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/porglezomp/buddhabrot/Cargo.toml
[INFO] started frobbing porglezomp/buddhabrot
[INFO] finished frobbing porglezomp/buddhabrot
[INFO] frobbed toml for porglezomp/buddhabrot written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/porglezomp/buddhabrot/Cargo.toml
[INFO] crate porglezomp/buddhabrot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking porglezomp/buddhabrot against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-4/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/porglezomp/buddhabrot:/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=forbid" "-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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f1ec1fcf11982a97e87b39f3e7e473ef9e6557faf247ce4d895cab48bf89265f
[INFO] running `"docker" "start" "-a" "f1ec1fcf11982a97e87b39f3e7e473ef9e6557faf247ce4d895cab48bf89265f"`
[INFO] [stderr]     Checking serde v0.8.17
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking sdl2-sys v0.25.0
[INFO] [stderr]     Checking enum_primitive v0.1.0
[INFO] [stderr]     Checking rayon v0.5.0
[INFO] [stderr]     Checking sdl2 v0.25.0
[INFO] [stderr]     Checking flate2 v0.2.14
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.8
[INFO] [stderr]     Checking image v0.10.3
[INFO] [stderr]     Checking bincode v0.6.0
[INFO] [stderr]     Checking buddhabrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/main.rs:424:38
[INFO] [stderr]     |
[INFO] [stderr] 424 |             #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/main.rs:424:22
[INFO] [stderr]     |
[INFO] [stderr] 424 |             #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/main.rs:424:38
[INFO] [stderr]     |
[INFO] [stderr] 424 |             #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/main.rs:424:22
[INFO] [stderr]     |
[INFO] [stderr] 424 |             #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `buddhabrot`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `buddhabrot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f1ec1fcf11982a97e87b39f3e7e473ef9e6557faf247ce4d895cab48bf89265f"`
[INFO] running `"docker" "rm" "-f" "f1ec1fcf11982a97e87b39f3e7e473ef9e6557faf247ce4d895cab48bf89265f"`
[INFO] [stdout] f1ec1fcf11982a97e87b39f3e7e473ef9e6557faf247ce4d895cab48bf89265f