[INFO] cloning repository https://github.com/jvivian/fastq_pair [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jvivian/fastq_pair" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvivian%2Ffastq_pair", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvivian%2Ffastq_pair'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a186ad8e1c659523ef9a19ce056b3e64532bcdb1 [INFO] checking jvivian/fastq_pair against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvivian%2Ffastq_pair" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jvivian/fastq_pair on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jvivian/fastq_pair [INFO] finished tweaking git repo https://github.com/jvivian/fastq_pair [INFO] tweaked toml for git repo https://github.com/jvivian/fastq_pair written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jvivian/fastq_pair already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded failure_derive v0.1.4 [INFO] [stderr] Downloaded failure v0.1.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 458c0f507dd68cea05c45ad996b8b096b9c657f0216755d6885c0b3098b1c904 [INFO] running `Command { std: "docker" "start" "-a" "458c0f507dd68cea05c45ad996b8b096b9c657f0216755d6885c0b3098b1c904", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "458c0f507dd68cea05c45ad996b8b096b9c657f0216755d6885c0b3098b1c904", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "458c0f507dd68cea05c45ad996b8b096b9c657f0216755d6885c0b3098b1c904", kill_on_drop: false }` [INFO] [stdout] 458c0f507dd68cea05c45ad996b8b096b9c657f0216755d6885c0b3098b1c904 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 35e4cc63a3ed4b3dd16423d610d18c6e424ccb9b3435365d6ab7665e7858d045 [INFO] running `Command { std: "docker" "start" "-a" "35e4cc63a3ed4b3dd16423d610d18c6e424ccb9b3435365d6ab7665e7858d045", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.45 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v0.4.24 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling cc v1.0.28 [INFO] [stderr] Checking rand_core v0.3.0 [INFO] [stderr] Compiling autocfg v0.1.1 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Compiling failure_derive v0.1.4 [INFO] [stderr] Checking rustc-demangle v0.1.11 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking remove_dir_all v0.5.1 [INFO] [stderr] Checking textwrap v0.10.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling backtrace v0.3.13 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rand_chacha v0.1.0 [INFO] [stderr] Compiling rand_pcg v0.1.1 [INFO] [stderr] Compiling rand v0.6.1 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking subprocess v0.1.18 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling quote v0.6.10 [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Compiling syn v0.15.23 [INFO] [stderr] Checking tempfile v3.0.5 [INFO] [stderr] Compiling synstructure v0.10.1 [INFO] [stderr] Checking failure v0.1.4 [INFO] [stderr] Checking fastq_pair v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/seek.rs:59:13 [INFO] [stdout] | [INFO] [stdout] 59 | &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [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] 59 | let _ = &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/seek.rs:71:9 [INFO] [stdout] | [INFO] [stdout] 71 | &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 71 | let _ = &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/seek.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | &mut io.out_single.flush()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 76 | let _ = &mut io.out_single.flush()?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/store_read.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | &mut io.out_single.flush()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 33 | let _ = &mut io.out_single.flush()?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/seek.rs:59:13 [INFO] [stdout] | [INFO] [stdout] 59 | &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [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] 59 | let _ = &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/seek.rs:71:9 [INFO] [stdout] | [INFO] [stdout] 71 | &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 71 | let _ = &mut io.in_read1.seek(SeekFrom::Start(pos1))?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/seek.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | &mut io.out_single.flush()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 76 | let _ = &mut io.out_single.flush()?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/store_read.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | &mut io.out_single.flush()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 33 | let _ = &mut io.out_single.flush()?; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.17s [INFO] running `Command { std: "docker" "inspect" "35e4cc63a3ed4b3dd16423d610d18c6e424ccb9b3435365d6ab7665e7858d045", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35e4cc63a3ed4b3dd16423d610d18c6e424ccb9b3435365d6ab7665e7858d045", kill_on_drop: false }` [INFO] [stdout] 35e4cc63a3ed4b3dd16423d610d18c6e424ccb9b3435365d6ab7665e7858d045