[INFO] crate promise-rs 0.3.0 is already in cache
[INFO] extracting crate promise-rs 0.3.0 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/promise-rs/0.3.0
[INFO] extracting crate promise-rs 0.3.0 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/promise-rs/0.3.0
[INFO] validating manifest of promise-rs-0.3.0 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of promise-rs-0.3.0 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing promise-rs-0.3.0
[INFO] finished frobbing promise-rs-0.3.0
[INFO] frobbed toml for promise-rs-0.3.0 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/promise-rs/0.3.0/Cargo.toml
[INFO] started frobbing promise-rs-0.3.0
[INFO] finished frobbing promise-rs-0.3.0
[INFO] frobbed toml for promise-rs-0.3.0 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/promise-rs/0.3.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking promise-rs-0.3.0 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-1/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/promise-rs/0.3.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a70b77b2602b4d8d38dcddb92e784a1dca1bf530e1842692a1099dfe57a537f1
[INFO] running `"docker" "start" "-a" "a70b77b2602b4d8d38dcddb92e784a1dca1bf530e1842692a1099dfe57a537f1"`
[INFO] [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other binary targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a binary target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/crater/workdir/src/main.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a binary target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autobins = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr] warning: path `/opt/crater/workdir/src/main.rs` was erroneously implicitly accepted for binary `promise`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Checking promise-rs v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 let mut state = state_guard.as_mut().unwrap();
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 let mut state = state_guard.as_mut().unwrap();
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/lib.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |         #[derive(Debug)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_attributes)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 let mut state = state_guard.as_mut().unwrap();
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 let mut state = state_guard.as_mut().unwrap();
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/lib.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |         #[derive(Debug)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_attributes)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "a70b77b2602b4d8d38dcddb92e784a1dca1bf530e1842692a1099dfe57a537f1"`
[INFO] running `"docker" "rm" "-f" "a70b77b2602b4d8d38dcddb92e784a1dca1bf530e1842692a1099dfe57a537f1"`
[INFO] [stdout] a70b77b2602b4d8d38dcddb92e784a1dca1bf530e1842692a1099dfe57a537f1