[INFO] updating cached repository meepoSenpai/trebuchet-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/meepoSenpai/trebuchet-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/meepoSenpai/trebuchet-rs" "work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/meepoSenpai/trebuchet-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/meepoSenpai/trebuchet-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/meepoSenpai/trebuchet-rs" "work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/meepoSenpai/trebuchet-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/meepoSenpai/trebuchet-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 542b57b2dabd8bdf5e3eed46a726cfb2be3fd4db
[INFO] sha for GitHub repo meepoSenpai/trebuchet-rs: 542b57b2dabd8bdf5e3eed46a726cfb2be3fd4db
[INFO] validating manifest of meepoSenpai/trebuchet-rs on toolchain master#589beb979c0f1a9736e02e578913db88398c3ba5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of meepoSenpai/trebuchet-rs on toolchain try#42445ded8fd34235a676755cb5d079658ed51f6a
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing meepoSenpai/trebuchet-rs
[INFO] finished frobbing meepoSenpai/trebuchet-rs
[INFO] frobbed toml for meepoSenpai/trebuchet-rs written to work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/meepoSenpai/trebuchet-rs/Cargo.toml
[INFO] started frobbing meepoSenpai/trebuchet-rs
[INFO] finished frobbing meepoSenpai/trebuchet-rs
[INFO] frobbed toml for meepoSenpai/trebuchet-rs written to work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/meepoSenpai/trebuchet-rs/Cargo.toml
[INFO] crate meepoSenpai/trebuchet-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking meepoSenpai/trebuchet-rs against master#589beb979c0f1a9736e02e578913db88398c3ba5 for pr-60944
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60944/worker-1/master#589beb979c0f1a9736e02e578913db88398c3ba5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/meepoSenpai/trebuchet-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 01a2d3ebd6d67decf758f2b612d2f0fb6c21e93b792ef9038031b88c54fe3532
[INFO] running `"docker" "start" "-a" "01a2d3ebd6d67decf758f2b612d2f0fb6c21e93b792ef9038031b88c54fe3532"`
[INFO] [stderr]     Checking serde_urlencoded v0.4.3
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]     Checking reqwest v0.4.0
[INFO] [stderr]     Checking ddg v0.3.0
[INFO] [stderr]     Checking trebuchet-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/web_search.rs:47:37
[INFO] [stderr]    |
[INFO] [stderr] 47 |                                 let mut counter = &mut counter;
[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: function is never used: `try_launch`
[INFO] [stderr]   --> src/launch.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn try_launch(name: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/web_search.rs:47:37
[INFO] [stderr]    |
[INFO] [stderr] 47 |                                 let mut counter = &mut counter;
[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: function is never used: `try_launch`
[INFO] [stderr]   --> src/launch.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn try_launch(name: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.33s
[INFO] running `"docker" "inspect" "01a2d3ebd6d67decf758f2b612d2f0fb6c21e93b792ef9038031b88c54fe3532"`
[INFO] running `"docker" "rm" "-f" "01a2d3ebd6d67decf758f2b612d2f0fb6c21e93b792ef9038031b88c54fe3532"`
[INFO] [stdout] 01a2d3ebd6d67decf758f2b612d2f0fb6c21e93b792ef9038031b88c54fe3532