[INFO] fetching crate bgzf_rust_reader 0.2.1...
[INFO] checking bgzf_rust_reader-0.2.1 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate bgzf_rust_reader 0.2.1 into /workspace/builds/worker-52/source
[INFO] validating manifest of crates.io crate bgzf_rust_reader 0.2.1 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-52/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c01a273f6647d9131d4875ecf850f1d9b767057ec34308b9a75822f6d1e3f8eb
[INFO] running `Command { std: "docker" "start" "-a" "c01a273f6647d9131d4875ecf850f1d9b767057ec34308b9a75822f6d1e3f8eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c01a273f6647d9131d4875ecf850f1d9b767057ec34308b9a75822f6d1e3f8eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c01a273f6647d9131d4875ecf850f1d9b767057ec34308b9a75822f6d1e3f8eb", kill_on_drop: false }`
[INFO] [stdout] c01a273f6647d9131d4875ecf850f1d9b767057ec34308b9a75822f6d1e3f8eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89182f2f80f615b4e7246a1699df0974e060adf1adff7f2d4e5fe99061fd3fa4
[INFO] running `Command { std: "docker" "start" "-a" "89182f2f80f615b4e7246a1699df0974e060adf1adff7f2d4e5fe99061fd3fa4", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]    Compiling libdeflate-sys v0.7.3
[INFO] [stderr]     Checking positioned-io v0.2.2
[INFO] [stderr]     Checking libdeflater v0.7.3
[INFO] [stderr]     Checking bgzf_rust_reader v0.2.1 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/lib.rs (1 fix)
[INFO] [stderr]    Migrating tests/integration_test.rs from 2018 edition to 2021
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.47s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking bgzf_rust_reader v0.2.1 (/tmp/fixit)
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "89182f2f80f615b4e7246a1699df0974e060adf1adff7f2d4e5fe99061fd3fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89182f2f80f615b4e7246a1699df0974e060adf1adff7f2d4e5fe99061fd3fa4", kill_on_drop: false }`
[INFO] [stdout] 89182f2f80f615b4e7246a1699df0974e060adf1adff7f2d4e5fe99061fd3fa4