[INFO] fetching crate ronfmt 0.1.0...
[INFO] testing ronfmt-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate ronfmt 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate ronfmt 0.1.0
[INFO] finished tweaking crates.io crate ronfmt 0.1.0
[INFO] tweaked toml for crates.io crate ronfmt 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ronfmt 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "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 34 packages to latest compatible versions
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.5.51)
[INFO] [stderr]       Adding itertools v0.7.11 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_generator v2.8.3
[INFO] [stderr]   Downloaded pest v2.8.3
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded pest_meta v2.8.3
[INFO] [stderr]   Downloaded pest_derive v2.8.3
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 830c36e9bcb2846198189827f7b2b77c868715f11250550b789562dede1aa44c
[INFO] running `Command { std: "docker" "start" "-a" "830c36e9bcb2846198189827f7b2b77c868715f11250550b789562dede1aa44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "830c36e9bcb2846198189827f7b2b77c868715f11250550b789562dede1aa44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "830c36e9bcb2846198189827f7b2b77c868715f11250550b789562dede1aa44c", kill_on_drop: false }`
[INFO] [stdout] 830c36e9bcb2846198189827f7b2b77c868715f11250550b789562dede1aa44c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24f0f700b9165c4cfb4393ba196d2b662a11b4b77429b2c121cdc8d53ea61c80
[INFO] running `Command { std: "docker" "start" "-a" "24f0f700b9165c4cfb4393ba196d2b662a11b4b77429b2c121cdc8d53ea61c80", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.8.3
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling pest_meta v2.8.3
[INFO] [stderr]    Compiling pest_generator v2.8.3
[INFO] [stderr]    Compiling pest_derive v2.8.3
[INFO] [stderr]    Compiling ronfmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/ast/display.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             writeln!(f, "#![enable({})]", extensions.iter().join(", "));
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let _ = writeln!(f, "#![enable({})]", extensions.iter().join(", "));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.52s
[INFO] running `Command { std: "docker" "inspect" "24f0f700b9165c4cfb4393ba196d2b662a11b4b77429b2c121cdc8d53ea61c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24f0f700b9165c4cfb4393ba196d2b662a11b4b77429b2c121cdc8d53ea61c80", kill_on_drop: false }`
[INFO] [stdout] 24f0f700b9165c4cfb4393ba196d2b662a11b4b77429b2c121cdc8d53ea61c80
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fcb55b9b3118f098e3d72b5ada2a6d806056d7cd39e7292f86982c74f83e6a9
[INFO] running `Command { std: "docker" "start" "-a" "2fcb55b9b3118f098e3d72b5ada2a6d806056d7cd39e7292f86982c74f83e6a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling ronfmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/ast/display.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             writeln!(f, "#![enable({})]", extensions.iter().join(", "));
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let _ = writeln!(f, "#![enable({})]", extensions.iter().join(", "));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "2fcb55b9b3118f098e3d72b5ada2a6d806056d7cd39e7292f86982c74f83e6a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fcb55b9b3118f098e3d72b5ada2a6d806056d7cd39e7292f86982c74f83e6a9", kill_on_drop: false }`
[INFO] [stdout] 2fcb55b9b3118f098e3d72b5ada2a6d806056d7cd39e7292f86982c74f83e6a9
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 24e4dc40942be1a1e4eb13989e5306d4cf28aefe923e5a0fb5c958a0d966dca5
[INFO] running `Command { std: "docker" "start" "-a" "24e4dc40942be1a1e4eb13989e5306d4cf28aefe923e5a0fb5c958a0d966dca5", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/ast/display.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |             writeln!(f, "#![enable({})]", extensions.iter().join(", "));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 10 |             let _ = writeln!(f, "#![enable({})]", extensions.iter().join(", "));
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `ronfmt` (bin "ronfmt" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ronfmt-ff1e575db390493f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "24e4dc40942be1a1e4eb13989e5306d4cf28aefe923e5a0fb5c958a0d966dca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e4dc40942be1a1e4eb13989e5306d4cf28aefe923e5a0fb5c958a0d966dca5", kill_on_drop: false }`
[INFO] [stdout] 24e4dc40942be1a1e4eb13989e5306d4cf28aefe923e5a0fb5c958a0d966dca5