[INFO] updating cached repository psFried/rust-channel-perf
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/psFried/rust-channel-perf
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/psFried/rust-channel-perf" "work/ex/beta-1.38-1/sources/1.37.0/gh/psFried/rust-channel-perf"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/psFried/rust-channel-perf'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/psFried/rust-channel-perf" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/psFried/rust-channel-perf"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/psFried/rust-channel-perf'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4875401362c72e8ed72c00e033050c10106a12ea
[INFO] sha for GitHub repo psFried/rust-channel-perf: 4875401362c72e8ed72c00e033050c10106a12ea
[INFO] validating manifest of psFried/rust-channel-perf 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 psFried/rust-channel-perf 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 psFried/rust-channel-perf
[INFO] finished frobbing psFried/rust-channel-perf
[INFO] frobbed toml for psFried/rust-channel-perf written to work/ex/beta-1.38-1/sources/1.37.0/gh/psFried/rust-channel-perf/Cargo.toml
[INFO] started frobbing psFried/rust-channel-perf
[INFO] finished frobbing psFried/rust-channel-perf
[INFO] frobbed toml for psFried/rust-channel-perf written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/psFried/rust-channel-perf/Cargo.toml
[INFO] crate psFried/rust-channel-perf already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing psFried/rust-channel-perf 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/psFried/rust-channel-perf:/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] e1f66a9a6569c40a2cb277af6e381dfe7b8a8521301927e8e53416c013320bad
[INFO] running `"docker" "start" "-a" "e1f66a9a6569c40a2cb277af6e381dfe7b8a8521301927e8e53416c013320bad"`
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling adler32 v1.0.1
[INFO] [stderr]    Compiling histogram v0.6.6
[INFO] [stderr]    Compiling hsl v0.1.1
[INFO] [stderr]    Compiling getopts v0.2.14
[INFO] [stderr]    Compiling allan v0.2.1
[INFO] [stderr]    Compiling shuteye v0.2.0
[INFO] [stderr]    Compiling mpmc v0.1.2
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling clocksource v0.2.2
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling stb_truetype v0.1.2
[INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33
[INFO] [stderr]      |
[INFO] [stderr] 955  |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stderr]      |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 959  |         state = match (state, whitespace, limit) {
[INFO] [stderr]      |                        ----- borrow occurs due to use of `state` in closure
[INFO] [stderr] ...
[INFO] [stderr] 1008 |     while cont && match state { B | C => true, A => false } {
[INFO] [stderr]      |                                 ^ use of borrowed `state`
[INFO] [stderr] 1009 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stderr]      |         ------- borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling uuid v0.1.18
[INFO] [stderr]    Compiling bytes v0.4.4
[INFO] [stderr]    Compiling textwrap v0.7.0
[INFO] [stderr]    Compiling deflate v0.7.15
[INFO] [stderr]    Compiling heatmap v0.6.5
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling nodrop v0.1.9
[INFO] [stderr]    Compiling arrayvec v0.3.23
[INFO] [stderr]    Compiling url v0.2.38
[INFO] [stderr]    Compiling tokio-io v0.1.2
[INFO] [stderr]    Compiling clap v2.26.0
[INFO] [stderr]    Compiling rusttype v0.1.2
[INFO] [stderr]    Compiling tokio-core v0.1.9
[INFO] [stderr]    Compiling png v0.7.0
[INFO] [stderr]    Compiling tiny_http v0.5.8
[INFO] [stderr]    Compiling waterfall v0.7.0
[INFO] [stderr]    Compiling tic v0.2.2
[INFO] [stderr]    Compiling timing-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved imports `std::sync::mpsc::Select`, `std::sync::mpsc::Handle`
[INFO] [stderr]   --> src/sync_select.rs:10:40
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::mpsc::{channel, Sender, Select, Handle};
[INFO] [stderr]    |                                        ^^^^^^  ^^^^^^ no `Handle` in `sync::mpsc`
[INFO] [stderr]    |                                        |
[INFO] [stderr]    |                                        no `Select` in `sync::mpsc`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find macro `select!` in this scope
[INFO] [stderr]   --> src/sync_select.rs:46:33
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let event: Timing = select!{
[INFO] [stderr]    |                                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/sync_select.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(mpsc_select)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `timing-test`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused `futures::stream::Map` in tuple element 0 that must be used
[INFO] [stderr]   --> src/async.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         reactor.run(future).unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: streams do nothing unless polled
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e1f66a9a6569c40a2cb277af6e381dfe7b8a8521301927e8e53416c013320bad"`
[INFO] running `"docker" "rm" "-f" "e1f66a9a6569c40a2cb277af6e381dfe7b8a8521301927e8e53416c013320bad"`
[INFO] [stdout] e1f66a9a6569c40a2cb277af6e381dfe7b8a8521301927e8e53416c013320bad