[INFO] fetching crate twobit 0.2.1...
[INFO] building twobit-0.2.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate twobit 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate twobit 0.2.1
[INFO] finished tweaking crates.io crate twobit 0.2.1
[INFO] tweaked toml for crates.io crate twobit 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate twobit 0.2.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dc42e5bdb55e97d26a1fddfa1df6b3c3ec2a9a57c7eedeb4e2f0807f4c18a62
[INFO] running `Command { std: "docker" "start" "-a" "4dc42e5bdb55e97d26a1fddfa1df6b3c3ec2a9a57c7eedeb4e2f0807f4c18a62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dc42e5bdb55e97d26a1fddfa1df6b3c3ec2a9a57c7eedeb4e2f0807f4c18a62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dc42e5bdb55e97d26a1fddfa1df6b3c3ec2a9a57c7eedeb4e2f0807f4c18a62", kill_on_drop: false }`
[INFO] [stdout] 4dc42e5bdb55e97d26a1fddfa1df6b3c3ec2a9a57c7eedeb4e2f0807f4c18a62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09de6bc5020b92d333d6bbe0727062841836ebc11e900bda95d4892fe148eff5
[INFO] running `Command { std: "docker" "start" "-a" "09de6bc5020b92d333d6bbe0727062841836ebc11e900bda95d4892fe148eff5", kill_on_drop: false }`
[INFO] [stderr]    Compiling twobit v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/convert/mod.rs:72:45
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn sequence_lengths(&'a self) -> Result<&[SequenceLength], Box<dyn std::error::Error>>;
[INFO] [stdout]    |                          --                 ^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn sequence_lengths(&'a self) -> Result<&'a [SequenceLength], Box<dyn std::error::Error>>;
[INFO] [stdout]    |                                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "09de6bc5020b92d333d6bbe0727062841836ebc11e900bda95d4892fe148eff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09de6bc5020b92d333d6bbe0727062841836ebc11e900bda95d4892fe148eff5", kill_on_drop: false }`
[INFO] [stdout] 09de6bc5020b92d333d6bbe0727062841836ebc11e900bda95d4892fe148eff5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05edb19a6f2c70aa93e4e031ff2c2279d8da1584bcf61c95a0fde9a6de42adf7
[INFO] running `Command { std: "docker" "start" "-a" "05edb19a6f2c70aa93e4e031ff2c2279d8da1584bcf61c95a0fde9a6de42adf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling twobit v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/convert/mod.rs:72:45
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn sequence_lengths(&'a self) -> Result<&[SequenceLength], Box<dyn std::error::Error>>;
[INFO] [stdout]    |                          --                 ^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn sequence_lengths(&'a self) -> Result<&'a [SequenceLength], Box<dyn std::error::Error>>;
[INFO] [stdout]    |                                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/convert/mod.rs:72:45
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn sequence_lengths(&'a self) -> Result<&[SequenceLength], Box<dyn std::error::Error>>;
[INFO] [stdout]    |                          --                 ^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn sequence_lengths(&'a self) -> Result<&'a [SequenceLength], Box<dyn std::error::Error>>;
[INFO] [stdout]    |                                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "05edb19a6f2c70aa93e4e031ff2c2279d8da1584bcf61c95a0fde9a6de42adf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05edb19a6f2c70aa93e4e031ff2c2279d8da1584bcf61c95a0fde9a6de42adf7", kill_on_drop: false }`
[INFO] [stdout] 05edb19a6f2c70aa93e4e031ff2c2279d8da1584bcf61c95a0fde9a6de42adf7