[INFO] cloning repository https://github.com/Xijezu/ServerMonitor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Xijezu/ServerMonitor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXijezu%2FServerMonitor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXijezu%2FServerMonitor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b72783f5d8d63b3dcbb3c39084aa77e90da0f50
[INFO] checking Xijezu/ServerMonitor against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXijezu%2FServerMonitor" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Xijezu/ServerMonitor on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Xijezu/ServerMonitor
[INFO] finished tweaking git repo https://github.com/Xijezu/ServerMonitor
[INFO] tweaked toml for git repo https://github.com/Xijezu/ServerMonitor written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Xijezu/ServerMonitor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atoi v0.3.1
[INFO] [stderr]   Downloaded mysql_common v0.15.0
[INFO] [stderr]   Downloaded mysql v15.1.0
[INFO] [stderr]   Downloaded named_pipe v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af8f9683e7fc504acce1a7247c57f664887a083435b06800d90214bcac24d114
[INFO] running `Command { std: "docker" "start" "-a" "af8f9683e7fc504acce1a7247c57f664887a083435b06800d90214bcac24d114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af8f9683e7fc504acce1a7247c57f664887a083435b06800d90214bcac24d114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af8f9683e7fc504acce1a7247c57f664887a083435b06800d90214bcac24d114", kill_on_drop: false }`
[INFO] [stdout] af8f9683e7fc504acce1a7247c57f664887a083435b06800d90214bcac24d114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99e6f80c8e981464f42cb47e1cda9b7b3044d7a5aaa1024fe3acbe8e7c9ae252
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "99e6f80c8e981464f42cb47e1cda9b7b3044d7a5aaa1024fe3acbe8e7c9ae252", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling mysql v15.1.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking block-padding v0.1.3
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking atoi v0.3.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking twox-hash v1.2.0
[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/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/monitor.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             for mut servers in self.servers.iter_mut() {
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/monitor.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             for mut servers in self.servers.iter_mut() {
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "99e6f80c8e981464f42cb47e1cda9b7b3044d7a5aaa1024fe3acbe8e7c9ae252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99e6f80c8e981464f42cb47e1cda9b7b3044d7a5aaa1024fe3acbe8e7c9ae252", kill_on_drop: false }`
[INFO] [stdout] 99e6f80c8e981464f42cb47e1cda9b7b3044d7a5aaa1024fe3acbe8e7c9ae252