[INFO] fetching crate bgzf_rust_reader 0.2.1...
[INFO] checking bgzf_rust_reader-0.2.1 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate bgzf_rust_reader 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate bgzf_rust_reader 0.2.1 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bgzf_rust_reader 0.2.1
[INFO] finished tweaking crates.io crate bgzf_rust_reader 0.2.1
[INFO] tweaked toml for crates.io crate bgzf_rust_reader 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.5.3 (available: v1.5.0)
[INFO] [stderr]       Adding libdeflate-sys v0.7.5 (available: v1.21.0)
[INFO] [stderr]       Adding libdeflater v0.7.5 (available: v1.21.0)
[INFO] [stderr]       Adding positioned-io v0.2.2 (available: v0.3.3)
[INFO] [stderr]       Adding winapi v0.2.8 (available: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libdeflate-sys v0.7.5
[INFO] [stderr]   Downloaded libdeflater v0.7.5
[INFO] [stderr]   Downloaded positioned-io v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 907db57ed13faa3bc1850f46ee13848e0d14883a4f90a148cac039c487836f04
[INFO] running `Command { std: "docker" "start" "-a" "907db57ed13faa3bc1850f46ee13848e0d14883a4f90a148cac039c487836f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "907db57ed13faa3bc1850f46ee13848e0d14883a4f90a148cac039c487836f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "907db57ed13faa3bc1850f46ee13848e0d14883a4f90a148cac039c487836f04", kill_on_drop: false }`
[INFO] [stdout] 907db57ed13faa3bc1850f46ee13848e0d14883a4f90a148cac039c487836f04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee78f98c5bdbfb819e763b65c4316c048abe9f24ffdcb693550623e0468a938c
[INFO] running `Command { std: "docker" "start" "-a" "ee78f98c5bdbfb819e763b65c4316c048abe9f24ffdcb693550623e0468a938c", kill_on_drop: false }`
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking positioned-io v0.2.2
[INFO] [stderr]    Compiling cc v1.1.22
[INFO] [stderr]    Compiling libdeflate-sys v0.7.5
[INFO] [stderr]     Checking libdeflater v0.7.5
[INFO] [stderr]     Checking bgzf_rust_reader v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:426:11
[INFO] [stdout]     |
[INFO] [stdout] 426 |       Err(e) => {
[INFO] [stdout]     |           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/integration_test.rs:22:3
[INFO] [stdout]    |
[INFO] [stdout] 22 |   reader.read_to(&mut test_buffer);
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 22 |   let _ = reader.read_to(&mut test_buffer);
[INFO] [stdout]    |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `Command { std: "docker" "inspect" "ee78f98c5bdbfb819e763b65c4316c048abe9f24ffdcb693550623e0468a938c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee78f98c5bdbfb819e763b65c4316c048abe9f24ffdcb693550623e0468a938c", kill_on_drop: false }`
[INFO] [stdout] ee78f98c5bdbfb819e763b65c4316c048abe9f24ffdcb693550623e0468a938c