[INFO] crate romio 0.3.0-alpha.1 is already in cache
[INFO] extracting crate romio 0.3.0-alpha.1 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/romio/0.3.0-alpha.1
[INFO] extracting crate romio 0.3.0-alpha.1 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/romio/0.3.0-alpha.1
[INFO] validating manifest of romio-0.3.0-alpha.1 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of romio-0.3.0-alpha.1 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing romio-0.3.0-alpha.1
[INFO] finished frobbing romio-0.3.0-alpha.1
[INFO] frobbed toml for romio-0.3.0-alpha.1 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/romio/0.3.0-alpha.1/Cargo.toml
[INFO] started frobbing romio-0.3.0-alpha.1
[INFO] finished frobbing romio-0.3.0-alpha.1
[INFO] frobbed toml for romio-0.3.0-alpha.1 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/romio/0.3.0-alpha.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking romio-0.3.0-alpha.1 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/romio/0.3.0-alpha.1:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1c2acd3baadd70d1c8b3afca534bcc7cc5cefab746f0ab982dd5b2c9b4a9ffa7
[INFO] running `"docker" "start" "-a" "1c2acd3baadd70d1c8b3afca534bcc7cc5cefab746f0ab982dd5b2c9b4a9ffa7"`
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.10
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.10
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.10
[INFO] [stderr]     Checking romio v0.3.0-alpha.1 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `KING_LEAR`
[INFO] [stderr]   --> tests/udp.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / const KING_LEAR: &[u8] = b"
[INFO] [stderr] 4  | |                             I will do such things-
[INFO] [stderr] 5  | |     What they are yet I know not, but they shall be
[INFO] [stderr] 6  | |     The terrors of the earth. You think I'll weep?
[INFO] [stderr] ...  |
[INFO] [stderr] 11 | |     Or ere I'll weep.-O Fool, I shall go mad!
[INFO] [stderr] 12 | | ";
[INFO] [stderr]    | |__^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task::Spawn`
[INFO] [stderr]   --> tests/tcp.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use futures::task::Spawn;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.01s
[INFO] running `"docker" "inspect" "1c2acd3baadd70d1c8b3afca534bcc7cc5cefab746f0ab982dd5b2c9b4a9ffa7"`
[INFO] running `"docker" "rm" "-f" "1c2acd3baadd70d1c8b3afca534bcc7cc5cefab746f0ab982dd5b2c9b4a9ffa7"`
[INFO] [stdout] 1c2acd3baadd70d1c8b3afca534bcc7cc5cefab746f0ab982dd5b2c9b4a9ffa7