[INFO] crate mio-utun 0.6.19 is already in cache
[INFO] extracting crate mio-utun 0.6.19 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/mio-utun/0.6.19
[INFO] extracting crate mio-utun 0.6.19 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/mio-utun/0.6.19
[INFO] validating manifest of mio-utun-0.6.19 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mio-utun-0.6.19 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mio-utun-0.6.19
[INFO] finished frobbing mio-utun-0.6.19
[INFO] frobbed toml for mio-utun-0.6.19 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/mio-utun/0.6.19/Cargo.toml
[INFO] started frobbing mio-utun-0.6.19
[INFO] finished frobbing mio-utun-0.6.19
[INFO] frobbed toml for mio-utun-0.6.19 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/mio-utun/0.6.19/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mio-utun-0.6.19 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/mio-utun/0.6.19:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6881171f137bcc5e25a9c4a9911d2cb59034cb7ab22bd2d0a163151367e98e74
[INFO] running `"docker" "start" "-a" "6881171f137bcc5e25a9c4a9911d2cb59034cb7ab22bd2d0a163151367e98e74"`
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking mio-utun v0.6.19 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> tests/echo.rs:4:21
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{self, Write, Read};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::ErrorKind::WouldBlock`
[INFO] [stderr]  --> tests/echo.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::ErrorKind::WouldBlock;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> tests/echo.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / macro_rules! t {
[INFO] [stderr] 11 | |     ($e:expr) => (match $e {
[INFO] [stderr] 12 | |         Ok(e) => e,
[INFO] [stderr] 13 | |         Err(e) => panic!("{} failed with {}", stringify!($e), e),
[INFO] [stderr] 14 | |     })
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SERVER`
[INFO] [stderr]   --> tests/echo.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     const SERVER: Token = Token(0);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.55s
[INFO] running `"docker" "inspect" "6881171f137bcc5e25a9c4a9911d2cb59034cb7ab22bd2d0a163151367e98e74"`
[INFO] running `"docker" "rm" "-f" "6881171f137bcc5e25a9c4a9911d2cb59034cb7ab22bd2d0a163151367e98e74"`
[INFO] [stdout] 6881171f137bcc5e25a9c4a9911d2cb59034cb7ab22bd2d0a163151367e98e74