[INFO] updating cached repository Yuiki/bist
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Yuiki/bist
[INFO] [stderr] * branch HEAD -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Yuiki/bist" "work/ex/beta-1.38-1/sources/1.37.0/gh/Yuiki/bist"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Yuiki/bist'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Yuiki/bist" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yuiki/bist"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yuiki/bist'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1387fb57d717330ccd3c49c384e3384e756a5ff7
[INFO] sha for GitHub repo Yuiki/bist: 1387fb57d717330ccd3c49c384e3384e756a5ff7
[INFO] validating manifest of Yuiki/bist 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 Yuiki/bist 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 Yuiki/bist
[INFO] finished frobbing Yuiki/bist
[INFO] frobbed toml for Yuiki/bist written to work/ex/beta-1.38-1/sources/1.37.0/gh/Yuiki/bist/Cargo.toml
[INFO] started frobbing Yuiki/bist
[INFO] finished frobbing Yuiki/bist
[INFO] frobbed toml for Yuiki/bist written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yuiki/bist/Cargo.toml
[INFO] crate Yuiki/bist 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 Yuiki/bist against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yuiki/bist:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 97dcf170abaafcf78d385eece3f2023f803c467057792ce7807de239d9b7e416
[INFO] running `"docker" "start" "-a" "97dcf170abaafcf78d385eece3f2023f803c467057792ce7807de239d9b7e416"`
[INFO] [stderr] Compiling block-padding v0.1.3
[INFO] [stderr] Compiling tokio-sync v0.1.0
[INFO] [stderr] Compiling rand_os v0.1.1
[INFO] [stderr] Compiling tokio-timer v0.2.9
[INFO] [stderr] Compiling rand_pcg v0.1.1
[INFO] [stderr] Compiling mio v0.6.16
[INFO] [stderr] Compiling tokio-io v0.1.11
[INFO] [stderr] Compiling block-buffer v0.7.2
[INFO] [stderr] Compiling rand v0.6.4
[INFO] [stderr] Compiling sha2 v0.8.0
[INFO] [stderr] Compiling tokio-codec v0.1.1
[INFO] [stderr] Compiling mio-uds v0.6.7
[INFO] [stderr] Compiling parking_lot_core v0.4.0
[INFO] [stderr] Compiling parking_lot v0.7.1
[INFO] [stderr] Compiling crossbeam-channel v0.3.6
[INFO] [stderr] Compiling tokio-reactor v0.1.8
[INFO] [stderr] Compiling tokio-tcp v0.1.3
[INFO] [stderr] Compiling tokio-udp v0.1.3
[INFO] [stderr] Compiling tokio-uds v0.2.5
[INFO] [stderr] Compiling crossbeam v0.6.0
[INFO] [stderr] Compiling tokio-threadpool v0.1.11
[INFO] [stderr] Compiling tokio-fs v0.1.5
[INFO] [stderr] Compiling tokio v0.1.15
[INFO] [stderr] Compiling bist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `peer`
[INFO] [stderr] --> src/spv.rs:34:13
[INFO] [stderr] |
[INFO] [stderr] 34 | let peer = peers.first().unwrap();
[INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_peer`
[INFO] [stderr] |
[INFO] [stderr] = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr] --> src/spv.rs:50:40
[INFO] [stderr] |
[INFO] [stderr] 50 | framed.send(version).then(|r| {
[INFO] [stderr] | ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr]
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr] --> src/spv.rs:53:21
[INFO] [stderr] |
[INFO] [stderr] 53 | }).map_err(|e| {});
[INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr] --> src/message.rs:91:26
[INFO] [stderr] |
[INFO] [stderr] 91 | fn decode(&mut self, src: &mut BytesMut) -> Result