[INFO] cloning repository gregtatum/rust-sketches
[INFO] running `"git" "clone" "--bare" "git://github.com/gregtatum/rust-sketches.git" "work/cache/sources/gh/gregtatum/rust-sketches"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/gregtatum/rust-sketches'...
[INFO] running `"git" "clone" "work/cache/sources/gh/gregtatum/rust-sketches" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gregtatum/rust-sketches"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gregtatum/rust-sketches'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gregtatum/rust-sketches" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/gregtatum/rust-sketches"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/gregtatum/rust-sketches'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d72efc73822d9837cb7856e6dfae8b85bcaec8bd
[INFO] sha for GitHub repo gregtatum/rust-sketches: d72efc73822d9837cb7856e6dfae8b85bcaec8bd
[INFO] validating manifest of gregtatum/rust-sketches on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gregtatum/rust-sketches on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gregtatum/rust-sketches
[INFO] finished frobbing gregtatum/rust-sketches
[INFO] frobbed toml for gregtatum/rust-sketches written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gregtatum/rust-sketches/Cargo.toml
[INFO] started frobbing gregtatum/rust-sketches
[INFO] finished frobbing gregtatum/rust-sketches
[INFO] frobbed toml for gregtatum/rust-sketches written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/gregtatum/rust-sketches/Cargo.toml
[INFO] crate gregtatum/rust-sketches already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking gregtatum/rust-sketches against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-5/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gregtatum/rust-sketches:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a5607ce5e8596cd12ac2a2164b152a10aff3ea1c01cd5ba3c4d48975148c07d4
[INFO] running `"docker" "start" "-a" "a5607ce5e8596cd12ac2a2164b152a10aff3ea1c01cd5ba3c4d48975148c07d4"`
[INFO] [stderr]     Checking rust-memory v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `generic_traits`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `examples/generic-traits.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `rust-memory`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: expected type, found `0`
[INFO] [stderr]   --> examples/macro-expansion.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     cb![Box:new(0), Box::new(1)]
[INFO] [stderr]    |            -    ^ expecting a type here because of type ascription
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: maybe you meant to write a path separator here: `::`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust-memory`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> examples/match-ownership.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut x = &Struct { value: 5 };
[INFO] [stderr]   |         ----^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a5607ce5e8596cd12ac2a2164b152a10aff3ea1c01cd5ba3c4d48975148c07d4"`
[INFO] running `"docker" "rm" "-f" "a5607ce5e8596cd12ac2a2164b152a10aff3ea1c01cd5ba3c4d48975148c07d4"`
[INFO] [stdout] a5607ce5e8596cd12ac2a2164b152a10aff3ea1c01cd5ba3c4d48975148c07d4