[INFO] crate irc-channel 0.1.1 is already in cache
[INFO] extracting crate irc-channel 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/irc-channel/0.1.1
[INFO] extracting crate irc-channel 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/irc-channel/0.1.1
[INFO] validating manifest of irc-channel-0.1.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of irc-channel-0.1.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing irc-channel-0.1.1
[INFO] finished frobbing irc-channel-0.1.1
[INFO] frobbed toml for irc-channel-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/irc-channel/0.1.1/Cargo.toml
[INFO] started frobbing irc-channel-0.1.1
[INFO] finished frobbing irc-channel-0.1.1
[INFO] frobbed toml for irc-channel-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/irc-channel/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing irc-channel-0.1.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/irc-channel/0.1.1:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e5f6465c99ebd80183f57bb063c23d1e6e1e48ccadce8f469960812913d68921
[INFO] running `"docker" "start" "-a" "e5f6465c99ebd80183f57bb063c23d1e6e1e48ccadce8f469960812913d68921"`
[INFO] [stderr]    Compiling irc_message v1.0.0
[INFO] [stderr]    Compiling many2many v0.0.2
[INFO] [stderr]    Compiling irc-channel v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "e5f6465c99ebd80183f57bb063c23d1e6e1e48ccadce8f469960812913d68921"`
[INFO] running `"docker" "rm" "-f" "e5f6465c99ebd80183f57bb063c23d1e6e1e48ccadce8f469960812913d68921"`
[INFO] [stdout] e5f6465c99ebd80183f57bb063c23d1e6e1e48ccadce8f469960812913d68921
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/irc-channel/0.1.1:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] baea0e7fed14d2d6e93adf621e571194f95b452245be379351505846d4184e38
[INFO] running `"docker" "start" "-a" "baea0e7fed14d2d6e93adf621e571194f95b452245be379351505846d4184e38"`
[INFO] [stderr]    Compiling irc-channel v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error: cannot find macro `select!` in this scope
[INFO] [stderr]   --> examples/basic_client.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         select!{
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> examples/basic_client.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(std_misc)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `irc_message::IrcMessage`
[INFO] [stderr]  --> examples/basic_client.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use irc_message::IrcMessage;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `irc-channel`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "baea0e7fed14d2d6e93adf621e571194f95b452245be379351505846d4184e38"`
[INFO] running `"docker" "rm" "-f" "baea0e7fed14d2d6e93adf621e571194f95b452245be379351505846d4184e38"`
[INFO] [stdout] baea0e7fed14d2d6e93adf621e571194f95b452245be379351505846d4184e38