[INFO] cloning repository https://github.com/lightsing/chinese-telegraph-code
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lightsing/chinese-telegraph-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightsing%2Fchinese-telegraph-code"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightsing%2Fchinese-telegraph-code'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 747db18a5fc9088a6e3d159ed69990874c41cc9b
[INFO] checking lightsing/chinese-telegraph-code against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightsing%2Fchinese-telegraph-code" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lightsing/chinese-telegraph-code on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/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 `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ffca0d7a150fceed5447826583ef72b3e71594f47188a2282c732113c83477da
[INFO] running `"docker" "start" "-a" "ffca0d7a150fceed5447826583ef72b3e71594f47188a2282c732113c83477da"`
[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] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut src: Vec<u8> = converter::code2char::init();
[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/converter/code2char.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut bytes: Vec<u8> = include_bytes!("code2char-src.txt.xz").to_vec();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `N`
[INFO] [stderr]  --> src/converter/code2char.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | static N: usize = 10;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_code_node`
[INFO] [stderr]   --> src/converter/code2char.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn create_code_node(val: Option<char>) -> Box<CodeNode> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/converter/code2char.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn insert(&mut self, index: usize, node:Box<CodeNode>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut src: Vec<u8> = converter::code2char::init();
[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/converter/code2char.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut bytes: Vec<u8> = include_bytes!("code2char-src.txt.xz").to_vec();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `N`
[INFO] [stderr]  --> src/converter/code2char.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | static N: usize = 10;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_code_node`
[INFO] [stderr]   --> src/converter/code2char.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn create_code_node(val: Option<char>) -> Box<CodeNode> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/converter/code2char.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn insert(&mut self, index: usize, node:Box<CodeNode>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.16s
[INFO] running `"docker" "inspect" "ffca0d7a150fceed5447826583ef72b3e71594f47188a2282c732113c83477da"`
[INFO] running `"docker" "rm" "-f" "ffca0d7a150fceed5447826583ef72b3e71594f47188a2282c732113c83477da"`
[INFO] [stdout] ffca0d7a150fceed5447826583ef72b3e71594f47188a2282c732113c83477da