[INFO] updating cached repository https://github.com/michalj/dedup [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] 497015bec44f574ee138c02bd571f02603c22a54 [INFO] checking michalj/dedup against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichalj%2Fdedup" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/michalj/dedup on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/michalj/dedup [INFO] finished tweaking git repo https://github.com/michalj/dedup [INFO] tweaked toml for git repo https://github.com/michalj/dedup written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/michalj/dedup already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 98cc9d65fcef369ac756747f1c1538445cc36555889c030e5a194ef58b4e7bd1 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "98cc9d65fcef369ac756747f1c1538445cc36555889c030e5a194ef58b4e7bd1"` [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking dedup v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/main.rs:96:13 [INFO] [stderr] | [INFO] [stderr] 96 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio_fs` [INFO] [stderr] --> src/main.rs:97:13 [INFO] [stderr] | [INFO] [stderr] 97 | use tokio_fs; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/main.rs:101:17 [INFO] [stderr] | [INFO] [stderr] 101 | let result = tokio_fs::File::open("test_data/test_hash.txt").join(tokio_fs::File::open("test_data/prefix_of_test_hash.txt")).and_then(|(f1, f2)| { [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `block_on` [INFO] [stderr] --> src/main.rs:309:16 [INFO] [stderr] | [INFO] [stderr] 309 | pub fn block_on(future: F) -> T [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:170:21 [INFO] [stderr] | [INFO] [stderr] 170 | / hash_holder_write.lock().map(|mut result| { [INFO] [stderr] 171 | | *result = hash; [INFO] [stderr] 172 | | }); [INFO] [stderr] | |_______________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:294:21 [INFO] [stderr] | [INFO] [stderr] 294 | / result_holder_write.lock().map(|mut result| { [INFO] [stderr] 295 | | *result = Some(output); [INFO] [stderr] 296 | | }); [INFO] [stderr] | |_______________________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:319:21 [INFO] [stderr] | [INFO] [stderr] 319 | / result_holder_write.lock().map(|mut result| { [INFO] [stderr] 320 | | *result = Some(output); [INFO] [stderr] 321 | | }); [INFO] [stderr] | |_______________________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: function is never used: `compare` [INFO] [stderr] --> src/main.rs:58:8 [INFO] [stderr] | [INFO] [stderr] 58 | fn compare(stream_a: R1, stream_b: R2) -> impl Future where R1: AsyncRead + 'static, R2: AsyncRead + 'static { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `hash_file` [INFO] [stderr] --> src/main.rs:163:12 [INFO] [stderr] | [INFO] [stderr] 163 | fn hash_file(name: &str, first_bytes: usize) -> u64 { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `block_on` [INFO] [stderr] --> src/main.rs:284:12 [INFO] [stderr] | [INFO] [stderr] 284 | fn block_on(future: F) -> T [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `block_on` [INFO] [stderr] --> src/main.rs:309:16 [INFO] [stderr] | [INFO] [stderr] 309 | pub fn block_on(future: F) -> T [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:170:21 [INFO] [stderr] | [INFO] [stderr] 170 | / hash_holder_write.lock().map(|mut result| { [INFO] [stderr] 171 | | *result = hash; [INFO] [stderr] 172 | | }); [INFO] [stderr] | |_______________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:294:21 [INFO] [stderr] | [INFO] [stderr] 294 | / result_holder_write.lock().map(|mut result| { [INFO] [stderr] 295 | | *result = Some(output); [INFO] [stderr] 296 | | }); [INFO] [stderr] | |_______________________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:319:21 [INFO] [stderr] | [INFO] [stderr] 319 | / result_holder_write.lock().map(|mut result| { [INFO] [stderr] 320 | | *result = Some(output); [INFO] [stderr] 321 | | }); [INFO] [stderr] | |_______________________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 12.16s [INFO] running `"docker" "inspect" "98cc9d65fcef369ac756747f1c1538445cc36555889c030e5a194ef58b4e7bd1"` [INFO] running `"docker" "rm" "-f" "98cc9d65fcef369ac756747f1c1538445cc36555889c030e5a194ef58b4e7bd1"` [INFO] [stdout] 98cc9d65fcef369ac756747f1c1538445cc36555889c030e5a194ef58b4e7bd1