[INFO] updating cached repository Xijezu/ServerMonitor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Xijezu/ServerMonitor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Xijezu/ServerMonitor" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Xijezu/ServerMonitor"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Xijezu/ServerMonitor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Xijezu/ServerMonitor" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Xijezu/ServerMonitor"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Xijezu/ServerMonitor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3b72783f5d8d63b3dcbb3c39084aa77e90da0f50
[INFO] sha for GitHub repo Xijezu/ServerMonitor: 3b72783f5d8d63b3dcbb3c39084aa77e90da0f50
[INFO] validating manifest of Xijezu/ServerMonitor on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Xijezu/ServerMonitor on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Xijezu/ServerMonitor
[INFO] finished frobbing Xijezu/ServerMonitor
[INFO] frobbed toml for Xijezu/ServerMonitor written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Xijezu/ServerMonitor/Cargo.toml
[INFO] started frobbing Xijezu/ServerMonitor
[INFO] finished frobbing Xijezu/ServerMonitor
[INFO] frobbed toml for Xijezu/ServerMonitor written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Xijezu/ServerMonitor/Cargo.toml
[INFO] crate Xijezu/ServerMonitor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Xijezu/ServerMonitor against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Xijezu/ServerMonitor:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d14bcbb5e738723456d1967420c6b900e1f5b6cda889d959ce06f3b9f82d77e9
[INFO] running `"docker" "start" "-a" "d14bcbb5e738723456d1967420c6b900e1f5b6cda889d959ce06f3b9f82d77e9"`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling mysql v15.1.0
[INFO] [stderr]     Checking atoi v0.3.1
[INFO] [stderr]     Checking nix v0.12.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking serde v1.0.90
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking mysql_common v0.15.0
[INFO] [stderr]     Checking server_monitor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/monitor.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |             for mut servers in self.servers.iter_mut() {
[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/monitor.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |             for mut servers in self.servers.iter_mut() {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 52.18s
[INFO] running `"docker" "inspect" "d14bcbb5e738723456d1967420c6b900e1f5b6cda889d959ce06f3b9f82d77e9"`
[INFO] running `"docker" "rm" "-f" "d14bcbb5e738723456d1967420c6b900e1f5b6cda889d959ce06f3b9f82d77e9"`
[INFO] [stdout] d14bcbb5e738723456d1967420c6b900e1f5b6cda889d959ce06f3b9f82d77e9