[INFO] updating cached repository https://github.com/ColonelPhantom/lubberts
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6306123eee7ec45990584f57dbc15e4a7f129e4
[INFO] checking ColonelPhantom/lubberts against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColonelPhantom%2Flubberts" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ColonelPhantom/lubberts on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ColonelPhantom/lubberts
[INFO] finished tweaking git repo https://github.com/ColonelPhantom/lubberts
[INFO] tweaked toml for git repo https://github.com/ColonelPhantom/lubberts written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ColonelPhantom/lubberts already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] 16e68d731c3d9e6741b139c6c55d1d9b7cf4e562969dca8dfd7475967544c964
[INFO] running `"docker" "start" "-a" "16e68d731c3d9e6741b139c6c55d1d9b7cf4e562969dca8dfd7475967544c964"`
[INFO] [stderr]     Checking lubberts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/chunk.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Err(e) => return Err(ParseError::InvalidString),
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/chunk.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let mut c = Chunk {};
[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: variant is never constructed: `InvalidString`
[INFO] [stderr]   --> src/chunk.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     InvalidString,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LuaString`
[INFO] [stderr]   --> src/chunk.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct LuaString {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_bytes`
[INFO] [stderr]   --> src/chunk.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn from_bytes(bytes: &[u8]) -> Result<Self, ParseError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/chunk.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Err(e) => return Err(ParseError::InvalidString),
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/chunk.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let mut c = Chunk {};
[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: variant is never constructed: `InvalidString`
[INFO] [stderr]   --> src/chunk.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     InvalidString,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LuaString`
[INFO] [stderr]   --> src/chunk.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct LuaString {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_bytes`
[INFO] [stderr]   --> src/chunk.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn from_bytes(bytes: &[u8]) -> Result<Self, ParseError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "16e68d731c3d9e6741b139c6c55d1d9b7cf4e562969dca8dfd7475967544c964"`
[INFO] running `"docker" "rm" "-f" "16e68d731c3d9e6741b139c6c55d1d9b7cf4e562969dca8dfd7475967544c964"`
[INFO] [stdout] 16e68d731c3d9e6741b139c6c55d1d9b7cf4e562969dca8dfd7475967544c964