[INFO] updating cached repository sashaweiss/syncterm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sashaweiss/syncterm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sashaweiss/syncterm" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/sashaweiss/syncterm"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/sashaweiss/syncterm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sashaweiss/syncterm" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/sashaweiss/syncterm"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/sashaweiss/syncterm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7691cb3bddfcdaaada356cf4e73bdaa2ade16f35
[INFO] sha for GitHub repo sashaweiss/syncterm: 7691cb3bddfcdaaada356cf4e73bdaa2ade16f35
[INFO] validating manifest of sashaweiss/syncterm on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sashaweiss/syncterm on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sashaweiss/syncterm
[INFO] finished frobbing sashaweiss/syncterm
[INFO] frobbed toml for sashaweiss/syncterm written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/sashaweiss/syncterm/Cargo.toml
[INFO] started frobbing sashaweiss/syncterm
[INFO] finished frobbing sashaweiss/syncterm
[INFO] frobbed toml for sashaweiss/syncterm written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/sashaweiss/syncterm/Cargo.toml
[INFO] crate sashaweiss/syncterm already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking sashaweiss/syncterm against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/sashaweiss/syncterm:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 498402baef9403f123fd8e68a7a360414757fd6eda54f6346279582a419e7eff
[INFO] running `"docker" "start" "-a" "498402baef9403f123fd8e68a7a360414757fd6eda54f6346279582a419e7eff"`
[INFO] [stderr]    Compiling serde v1.0.64
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.4
[INFO] [stderr]     Checking rand v0.5.0
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking chan v0.1.21
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking tui v0.2.2
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.1
[INFO] [stderr]    Compiling serde_derive v1.0.64
[INFO] [stderr]     Checking serde_json v1.0.19
[INFO] [stderr]     Checking syncterm v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:98:16
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Ok(mut stream) => {
[INFO] [stderr]    |                ----^^^^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/server.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             Ok(mut line) => {
[INFO] [stderr]     |                ----^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:98:16
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Ok(mut stream) => {
[INFO] [stderr]    |                ----^^^^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/server.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             Ok(mut line) => {
[INFO] [stderr]     |                ----^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.83s
[INFO] running `"docker" "inspect" "498402baef9403f123fd8e68a7a360414757fd6eda54f6346279582a419e7eff"`
[INFO] running `"docker" "rm" "-f" "498402baef9403f123fd8e68a7a360414757fd6eda54f6346279582a419e7eff"`
[INFO] [stdout] 498402baef9403f123fd8e68a7a360414757fd6eda54f6346279582a419e7eff