[INFO] updating cached repository maniacalmm/tokio-examples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/maniacalmm/tokio-examples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/maniacalmm/tokio-examples" "work/ex/beta-1.37-6/sources/1.36.0/gh/maniacalmm/tokio-examples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/maniacalmm/tokio-examples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maniacalmm/tokio-examples" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/maniacalmm/tokio-examples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/maniacalmm/tokio-examples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ba5b987a617d3a211605027b1f732d07f9378085
[INFO] sha for GitHub repo maniacalmm/tokio-examples: ba5b987a617d3a211605027b1f732d07f9378085
[INFO] validating manifest of maniacalmm/tokio-examples on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of maniacalmm/tokio-examples on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing maniacalmm/tokio-examples
[INFO] finished frobbing maniacalmm/tokio-examples
[INFO] frobbed toml for maniacalmm/tokio-examples written to work/ex/beta-1.37-6/sources/1.36.0/gh/maniacalmm/tokio-examples/Cargo.toml
[INFO] started frobbing maniacalmm/tokio-examples
[INFO] finished frobbing maniacalmm/tokio-examples
[INFO] frobbed toml for maniacalmm/tokio-examples written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/maniacalmm/tokio-examples/Cargo.toml
[INFO] crate maniacalmm/tokio-examples already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing maniacalmm/tokio-examples against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/maniacalmm/tokio-examples:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 25d5c926803e5815d8868634da05c4697c33294f5ad54568ca967f4c2e9963db
[INFO] running `"docker" "start" "-a" "25d5c926803e5815d8868634da05c4697c33294f5ad54568ca967f4c2e9963db"`
[INFO] [stderr]    Compiling sketch v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "25d5c926803e5815d8868634da05c4697c33294f5ad54568ca967f4c2e9963db"`
[INFO] running `"docker" "rm" "-f" "25d5c926803e5815d8868634da05c4697c33294f5ad54568ca967f4c2e9963db"`
[INFO] [stdout] 25d5c926803e5815d8868634da05c4697c33294f5ad54568ca967f4c2e9963db
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/maniacalmm/tokio-examples:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2915da5724e8276cc6d49fd5a4ca4e0d0be23c982b7d57dba209764f5ac78f11
[INFO] running `"docker" "start" "-a" "2915da5724e8276cc6d49fd5a4ca4e0d0be23c982b7d57dba209764f5ac78f11"`
[INFO] [stderr]    Compiling sketch v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find value `read` in this scope
[INFO] [stderr]   --> examples/connect.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |     thread::spawn(|| read)
[INFO] [stderr]    |                      ^^^^ not found in this scope
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 6  | use core::ptr::read;
[INFO] [stderr]    |
[INFO] [stderr] 6  | use std::fs::read;
[INFO] [stderr]    |
[INFO] [stderr] 6  | use std::ptr::read;
[INFO] [stderr]    |
[INFO] [stderr] 6  | use tokio::fs::read;
[INFO] [stderr]    |
[INFO] [stderr] and 2 other candidates
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> examples/connect.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{self, Read, Write};
[INFO] [stderr]   |                           ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `sketch`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2915da5724e8276cc6d49fd5a4ca4e0d0be23c982b7d57dba209764f5ac78f11"`
[INFO] running `"docker" "rm" "-f" "2915da5724e8276cc6d49fd5a4ca4e0d0be23c982b7d57dba209764f5ac78f11"`
[INFO] [stdout] 2915da5724e8276cc6d49fd5a4ca4e0d0be23c982b7d57dba209764f5ac78f11