[INFO] updating cached repository JasonSmith/signal
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JasonSmith/signal
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JasonSmith/signal" "work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/JasonSmith/signal"`
[INFO] [stderr] Cloning into 'work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/JasonSmith/signal'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JasonSmith/signal" "work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/JasonSmith/signal"`
[INFO] [stderr] Cloning into 'work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/JasonSmith/signal'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e159586c0627ce1c53dfa070a0a703b0ca604e7a
[INFO] sha for GitHub repo JasonSmith/signal: e159586c0627ce1c53dfa070a0a703b0ca604e7a
[INFO] validating manifest of JasonSmith/signal on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of JasonSmith/signal on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing JasonSmith/signal
[INFO] finished frobbing JasonSmith/signal
[INFO] frobbed toml for JasonSmith/signal written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/JasonSmith/signal/Cargo.toml
[INFO] started frobbing JasonSmith/signal
[INFO] finished frobbing JasonSmith/signal
[INFO] frobbed toml for JasonSmith/signal written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/JasonSmith/signal/Cargo.toml
[INFO] crate JasonSmith/signal has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking JasonSmith/signal against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/JasonSmith/signal:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c98264ddeb7a9439910d52e50d8747c1962ef2e584e0c48f51b5c13f34e17fb4
[INFO] running `"docker" "start" "-a" "c98264ddeb7a9439910d52e50d8747c1962ef2e584e0c48f51b5c13f34e17fb4"`
[INFO] [stderr]     Checking signal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `TypeId`
[INFO] [stderr]  --> src/signal.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::any::{Any, TypeId};
[INFO] [stderr]   |                     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::hash_map::HashMap`
[INFO] [stderr]  --> src/signal.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::hash_map::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TypeId`
[INFO] [stderr]  --> src/signal.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::any::{Any, TypeId};
[INFO] [stderr]   |                     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::hash_map::HashMap`
[INFO] [stderr]  --> src/signal.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::hash_map::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callback`
[INFO] [stderr]   --> src/signal.rs:84:46
[INFO] [stderr]    |
[INFO] [stderr] 84 |    pub fn disconnect_with_data<F>(&mut self, callback: F)
[INFO] [stderr]    |                                              ^^^^^^^^ help: consider using `_callback` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `CallbackID`
[INFO] [stderr]  --> src/signal.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub type CallbackID = usize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callback`
[INFO] [stderr]   --> src/signal.rs:84:46
[INFO] [stderr]    |
[INFO] [stderr] 84 |    pub fn disconnect_with_data<F>(&mut self, callback: F)
[INFO] [stderr]    |                                              ^^^^^^^^ help: consider using `_callback` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `CallbackID`
[INFO] [stderr]  --> src/signal.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub type CallbackID = usize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "c98264ddeb7a9439910d52e50d8747c1962ef2e584e0c48f51b5c13f34e17fb4"`
[INFO] running `"docker" "rm" "-f" "c98264ddeb7a9439910d52e50d8747c1962ef2e584e0c48f51b5c13f34e17fb4"`
[INFO] [stdout] c98264ddeb7a9439910d52e50d8747c1962ef2e584e0c48f51b5c13f34e17fb4