[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-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/meepoSenpai/trebuchet-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/meepoSenpai/trebuchet-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/meepoSenpai/trebuchet-rs" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/meepoSenpai/trebuchet-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/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#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of meepoSenpai/trebuchet-rs on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-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-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/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-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/meepoSenpai/trebuchet-rs/Cargo.toml
[INFO] crate meepoSenpai/trebuchet-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking meepoSenpai/trebuchet-rs against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-1/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/meepoSenpai/trebuchet-rs:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a3641c3e1bda9af8dbc8beace83c0879b6d96e056306fb1f814186c0ec60a9f8
[INFO] running `"docker" "start" "-a" "a3641c3e1bda9af8dbc8beace83c0879b6d96e056306fb1f814186c0ec60a9f8"`
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]     Checking serde_urlencoded v0.4.3
[INFO] [stderr]    Compiling serde_derive v0.9.15
[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 10.44s
[INFO] running `"docker" "inspect" "a3641c3e1bda9af8dbc8beace83c0879b6d96e056306fb1f814186c0ec60a9f8"`
[INFO] running `"docker" "rm" "-f" "a3641c3e1bda9af8dbc8beace83c0879b6d96e056306fb1f814186c0ec60a9f8"`
[INFO] [stdout] a3641c3e1bda9af8dbc8beace83c0879b6d96e056306fb1f814186c0ec60a9f8