[INFO] crate radix-router 0.1.2 is already in cache
[INFO] extracting crate radix-router 0.1.2 into work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/radix-router/0.1.2
[INFO] extracting crate radix-router 0.1.2 into work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/radix-router/0.1.2
[INFO] validating manifest of radix-router-0.1.2 on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of radix-router-0.1.2 on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing radix-router-0.1.2
[INFO] finished frobbing radix-router-0.1.2
[INFO] frobbed toml for radix-router-0.1.2 written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/reg/radix-router/0.1.2/Cargo.toml
[INFO] started frobbing radix-router-0.1.2
[INFO] finished frobbing radix-router-0.1.2
[INFO] frobbed toml for radix-router-0.1.2 written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/radix-router/0.1.2/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking radix-router-0.1.2 against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-3/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/reg/radix-router/0.1.2:/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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b2dc13ea352579b1087d49c712edf990d97b38941506df125c3663b70b14ea1e
[INFO] running `"docker" "start" "-a" "b2dc13ea352579b1087d49c712edf990d97b38941506df125c3663b70b14ea1e"`
[INFO] [stderr]     Checking radix-router v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/tree.rs:1278:17
[INFO] [stderr]      |
[INFO] [stderr] 1278 |             let mut recv = panic::catch_unwind(|| {
[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/tree.rs:1320:17
[INFO] [stderr]      |
[INFO] [stderr] 1320 |             let mut recv = panic::catch_unwind(|| {
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/tree.rs:1366:17
[INFO] [stderr]      |
[INFO] [stderr] 1366 |             let mut recv = panic::catch_unwind(|| {
[INFO] [stderr]      |                 ----^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/tree.rs:1397:17
[INFO] [stderr]      |
[INFO] [stderr] 1397 |             let mut guard = match tree.lock() {
[INFO] [stderr]      |                 ----^^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/tree.rs:1413:17
[INFO] [stderr]      |
[INFO] [stderr] 1413 |             let mut guard = match tree.lock() {
[INFO] [stderr]      |                 ----^^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.24s
[INFO] running `"docker" "inspect" "b2dc13ea352579b1087d49c712edf990d97b38941506df125c3663b70b14ea1e"`
[INFO] running `"docker" "rm" "-f" "b2dc13ea352579b1087d49c712edf990d97b38941506df125c3663b70b14ea1e"`
[INFO] [stdout] b2dc13ea352579b1087d49c712edf990d97b38941506df125c3663b70b14ea1e