[INFO] cloning repository https://github.com/kks110/rust-book-tasts [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kks110/rust-book-tasts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkks110%2Frust-book-tasts", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkks110%2Frust-book-tasts'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c635b70b7e906b7b8ece5b1b8dfe5d4889ee606c [INFO] checking kks110/rust-book-tasts against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkks110%2Frust-book-tasts" "/workspace/builds/worker-43/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-43/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kks110/rust-book-tasts on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kks110/rust-book-tasts [INFO] finished tweaking git repo https://github.com/kks110/rust-book-tasts [INFO] tweaked toml for git repo https://github.com/kks110/rust-book-tasts written to /workspace/builds/worker-43/source/Cargo.toml [INFO] crate git repo https://github.com/kks110/rust-book-tasts already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 103af8020f2b74edefff99424005ec880f426e6a86e0c7e7283caa733a5c6a77 [INFO] running `Command { std: "docker" "start" "-a" "103af8020f2b74edefff99424005ec880f426e6a86e0c7e7283caa733a5c6a77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "103af8020f2b74edefff99424005ec880f426e6a86e0c7e7283caa733a5c6a77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "103af8020f2b74edefff99424005ec880f426e6a86e0c7e7283caa733a5c6a77", kill_on_drop: false }` [INFO] [stdout] 103af8020f2b74edefff99424005ec880f426e6a86e0c7e7283caa733a5c6a77 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aad14113273c59387b957d96f524a619a08285010fd48f67d778788b43d810a1 [INFO] running `Command { std: "docker" "start" "-a" "aad14113273c59387b957d96f524a619a08285010fd48f67d778788b43d810a1", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.79 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking rust_book_tasks v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/company_directory/mod.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | &engineering.sort(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 41 | let _ = &engineering.sort(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/company_directory/mod.rs:47:13 [INFO] [stdout] | [INFO] [stdout] 47 | &sales.sort(); [INFO] [stdout] | ^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 47 | let _ = &sales.sort(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/company_directory/mod.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | &engineering.sort(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 41 | let _ = &engineering.sort(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/company_directory/mod.rs:47:13 [INFO] [stdout] | [INFO] [stdout] 47 | &sales.sort(); [INFO] [stdout] | ^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 47 | let _ = &sales.sort(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.57s [INFO] running `Command { std: "docker" "inspect" "aad14113273c59387b957d96f524a619a08285010fd48f67d778788b43d810a1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aad14113273c59387b957d96f524a619a08285010fd48f67d778788b43d810a1", kill_on_drop: false }` [INFO] [stdout] aad14113273c59387b957d96f524a619a08285010fd48f67d778788b43d810a1