[INFO] updating cached repository https://github.com/lightsing/chinese-telegraph-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 747db18a5fc9088a6e3d159ed69990874c41cc9b
[INFO] checking lightsing/chinese-telegraph-code against try#85cc1486e1f000dce4bb8e1b3cfab2b654b102a8 for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightsing%2Fchinese-telegraph-code" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lightsing/chinese-telegraph-code on toolchain 85cc1486e1f000dce4bb8e1b3cfab2b654b102a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lightsing/chinese-telegraph-code
[INFO] finished tweaking git repo https://github.com/lightsing/chinese-telegraph-code
[INFO] tweaked toml for git repo https://github.com/lightsing/chinese-telegraph-code written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lightsing/chinese-telegraph-code already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a79285fa37e64e0a2911758c661202faa3d610cd96d414695dc7f3533d46121c
[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" "a79285fa37e64e0a2911758c661202faa3d610cd96d414695dc7f3533d46121c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a79285fa37e64e0a2911758c661202faa3d610cd96d414695dc7f3533d46121c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a79285fa37e64e0a2911758c661202faa3d610cd96d414695dc7f3533d46121c", kill_on_drop: false }`
[INFO] [stdout] a79285fa37e64e0a2911758c661202faa3d610cd96d414695dc7f3533d46121c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 045ee6f5df22b579ec9e0dec8b1ad381fd0a9d95cae837b21937d6c4fe8dcae4
[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" "045ee6f5df22b579ec9e0dec8b1ad381fd0a9d95cae837b21937d6c4fe8dcae4", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v0.3.13
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking bytebuffer v0.2.1
[INFO] [stderr]     Checking lzma-rs v0.1.0
[INFO] [stderr]     Checking chinese-telegraph-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut src: Vec<u8> = converter::code2char::init();
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/converter/code2char.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut bytes: Vec<u8> = include_bytes!("code2char-src.txt.xz").to_vec();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut src: Vec<u8> = converter::code2char::init();
[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: static is never used: `N`
[INFO] [stdout]  --> src/converter/code2char.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | static N: usize = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_code_node`
[INFO] [stdout]   --> src/converter/code2char.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn create_code_node(val: Option<char>) -> Box<CodeNode> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/converter/code2char.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn insert(&mut self, index: usize, node:Box<CodeNode>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/converter/code2char.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut bytes: Vec<u8> = include_bytes!("code2char-src.txt.xz").to_vec();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `N`
[INFO] [stdout]  --> src/converter/code2char.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | static N: usize = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_code_node`
[INFO] [stdout]   --> src/converter/code2char.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn create_code_node(val: Option<char>) -> Box<CodeNode> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/converter/code2char.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn insert(&mut self, index: usize, node:Box<CodeNode>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "045ee6f5df22b579ec9e0dec8b1ad381fd0a9d95cae837b21937d6c4fe8dcae4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045ee6f5df22b579ec9e0dec8b1ad381fd0a9d95cae837b21937d6c4fe8dcae4", kill_on_drop: false }`
[INFO] [stdout] 045ee6f5df22b579ec9e0dec8b1ad381fd0a9d95cae837b21937d6c4fe8dcae4