[INFO] fetching crate jatch 0.1.1...
[INFO] checking jatch-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate jatch 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate jatch 0.1.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jatch 0.1.1
[INFO] finished tweaking crates.io crate jatch 0.1.1
[INFO] tweaked toml for crates.io crate jatch 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding criterion v0.3.6 (latest: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (latest: v0.5.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0c30cd2b3672f5a01cf4a73330c48ba872fc0845bce7815915886309f91559b
[INFO] running `Command { std: "docker" "start" "-a" "c0c30cd2b3672f5a01cf4a73330c48ba872fc0845bce7815915886309f91559b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0c30cd2b3672f5a01cf4a73330c48ba872fc0845bce7815915886309f91559b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c30cd2b3672f5a01cf4a73330c48ba872fc0845bce7815915886309f91559b", kill_on_drop: false }`
[INFO] [stdout] c0c30cd2b3672f5a01cf4a73330c48ba872fc0845bce7815915886309f91559b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 069e0e7ac46c8da0bfd0bb8129513b2063ffcfd1ac9a314cb15df9385f7b29b1
[INFO] running `Command { std: "docker" "start" "-a" "069e0e7ac46c8da0bfd0bb8129513b2063ffcfd1ac9a314cb15df9385f7b29b1", kill_on_drop: false }`
[INFO] [stderr]     Checking jatch v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `doc`, `patch`, `expected`, `error`, and `comment` are never read
[INFO] [stdout]   --> src/patch/apply/mod.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     struct TestCase {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 84 |         doc: Value,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 85 |         patch: Vec<Patch>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 86 |         expected: Option<Value>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 87 |         error: Option<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 88 |         comment: Option<String>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestCase` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used
[INFO] [stdout]    --> src/path.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         Path::from("/foo");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[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] 141 |         let _ = Path::from("/foo");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "069e0e7ac46c8da0bfd0bb8129513b2063ffcfd1ac9a314cb15df9385f7b29b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "069e0e7ac46c8da0bfd0bb8129513b2063ffcfd1ac9a314cb15df9385f7b29b1", kill_on_drop: false }`
[INFO] [stdout] 069e0e7ac46c8da0bfd0bb8129513b2063ffcfd1ac9a314cb15df9385f7b29b1
[INFO] checking jatch-0.1.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate jatch 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate jatch 0.1.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jatch 0.1.1
[INFO] finished tweaking crates.io crate jatch 0.1.1
[INFO] tweaked toml for crates.io crate jatch 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be7203e9d0e4068b9fd4c6caf446e50f8d5f64e1c44ea30b55e1a6a327257edb
[INFO] running `Command { std: "docker" "start" "-a" "be7203e9d0e4068b9fd4c6caf446e50f8d5f64e1c44ea30b55e1a6a327257edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be7203e9d0e4068b9fd4c6caf446e50f8d5f64e1c44ea30b55e1a6a327257edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7203e9d0e4068b9fd4c6caf446e50f8d5f64e1c44ea30b55e1a6a327257edb", kill_on_drop: false }`
[INFO] [stdout] be7203e9d0e4068b9fd4c6caf446e50f8d5f64e1c44ea30b55e1a6a327257edb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c016db02cec6002e972afdeda67fb08350fef819d4163c0a289ba83f0e5fb8c
[INFO] running `Command { std: "docker" "start" "-a" "7c016db02cec6002e972afdeda67fb08350fef819d4163c0a289ba83f0e5fb8c", kill_on_drop: false }`
[INFO] [stderr]     Checking jatch v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `doc`, `patch`, `expected`, `error`, and `comment` are never read
[INFO] [stdout]   --> src/patch/apply/mod.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     struct TestCase {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 84 |         doc: Value,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 85 |         patch: Vec<Patch>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 86 |         expected: Option<Value>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 87 |         error: Option<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 88 |         comment: Option<String>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestCase` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used
[INFO] [stdout]    --> src/path.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         Path::from("/foo");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[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] 141 |         let _ = Path::from("/foo");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "7c016db02cec6002e972afdeda67fb08350fef819d4163c0a289ba83f0e5fb8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c016db02cec6002e972afdeda67fb08350fef819d4163c0a289ba83f0e5fb8c", kill_on_drop: false }`
[INFO] [stdout] 7c016db02cec6002e972afdeda67fb08350fef819d4163c0a289ba83f0e5fb8c