[INFO] fetching crate vicuna-compiler 0.1.1...
[INFO] checking vicuna-compiler-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate vicuna-compiler 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate vicuna-compiler 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 vicuna-compiler 0.1.1
[INFO] finished tweaking crates.io crate vicuna-compiler 0.1.1
[INFO] tweaked toml for crates.io crate vicuna-compiler 0.1.1 written to /workspace/builds/worker-4-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 68 packages
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding miette v5.10.0 (latest: v7.2.0)
[INFO] [stderr]       Adding miette-derive v5.10.0 (latest: v7.2.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding owo-colors v3.5.0 (latest: v4.0.0)
[INFO] [stderr]       Adding supports-color v2.1.0 (latest: v3.0.0)
[INFO] [stderr]       Adding supports-hyperlinks v2.1.0 (latest: v3.0.0)
[INFO] [stderr]       Adding supports-unicode v2.1.0 (latest: v3.0.0)
[INFO] [stderr]       Adding terminal_size v0.1.17 (latest: v0.3.0)
[INFO] [stderr]       Adding textwrap v0.15.2 (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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded build-target v0.4.0
[INFO] [stderr]   Downloaded textwrap v0.15.2
[INFO] [stderr]   Downloaded is_ci v1.2.0
[INFO] [stderr]   Downloaded supports-color v2.1.0
[INFO] [stderr]   Downloaded supports-hyperlinks v2.1.0
[INFO] [stderr]   Downloaded chumsky v0.9.3
[INFO] [stderr]   Downloaded supports-unicode v2.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ba10cfb5fe33c7652938ec8e4449fbce13eef17894efa40b79148051ffff88f7
[INFO] running `Command { std: "docker" "start" "-a" "ba10cfb5fe33c7652938ec8e4449fbce13eef17894efa40b79148051ffff88f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba10cfb5fe33c7652938ec8e4449fbce13eef17894efa40b79148051ffff88f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba10cfb5fe33c7652938ec8e4449fbce13eef17894efa40b79148051ffff88f7", kill_on_drop: false }`
[INFO] [stdout] ba10cfb5fe33c7652938ec8e4449fbce13eef17894efa40b79148051ffff88f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] cff52c41a037c9fd8e3805d747fc19a6c5874557ba45d0b995c03c1e5597c8b2
[INFO] running `Command { std: "docker" "start" "-a" "cff52c41a037c9fd8e3805d747fc19a6c5874557ba45d0b995c03c1e5597c8b2", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking smawk v0.3.2
[INFO] [stderr]     Checking is_ci v1.2.0
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking unicode-linebreak v0.1.5
[INFO] [stderr]     Checking supports-hyperlinks v2.1.0
[INFO] [stderr]     Checking supports-color v2.1.0
[INFO] [stderr]     Checking supports-unicode v2.1.0
[INFO] [stderr]    Compiling miette-derive v5.10.0
[INFO] [stderr]     Checking textwrap v0.15.2
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking similar v2.5.0
[INFO] [stderr]     Checking id-arena v2.2.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking chumsky v0.9.3
[INFO] [stderr]     Checking insta v1.38.0
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]     Checking miette v5.10.0
[INFO] [stderr]     Checking vicuna-compiler v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.58s
[INFO] running `Command { std: "docker" "inspect" "cff52c41a037c9fd8e3805d747fc19a6c5874557ba45d0b995c03c1e5597c8b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff52c41a037c9fd8e3805d747fc19a6c5874557ba45d0b995c03c1e5597c8b2", kill_on_drop: false }`
[INFO] [stdout] cff52c41a037c9fd8e3805d747fc19a6c5874557ba45d0b995c03c1e5597c8b2
[INFO] checking vicuna-compiler-0.1.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate vicuna-compiler 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate vicuna-compiler 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 vicuna-compiler 0.1.1
[INFO] finished tweaking crates.io crate vicuna-compiler 0.1.1
[INFO] tweaked toml for crates.io crate vicuna-compiler 0.1.1 written to /workspace/builds/worker-4-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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5f00ecbae59c11d514e7ddb7adb8b6bc861a59047dfb41a49a27c48b57e03ab9
[INFO] running `Command { std: "docker" "start" "-a" "5f00ecbae59c11d514e7ddb7adb8b6bc861a59047dfb41a49a27c48b57e03ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f00ecbae59c11d514e7ddb7adb8b6bc861a59047dfb41a49a27c48b57e03ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f00ecbae59c11d514e7ddb7adb8b6bc861a59047dfb41a49a27c48b57e03ab9", kill_on_drop: false }`
[INFO] [stdout] 5f00ecbae59c11d514e7ddb7adb8b6bc861a59047dfb41a49a27c48b57e03ab9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7a9a45b0f0a393f6e39e8e7073259250382e7a5023ceacf9109e0147976d7d3f
[INFO] running `Command { std: "docker" "start" "-a" "7a9a45b0f0a393f6e39e8e7073259250382e7a5023ceacf9109e0147976d7d3f", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking smawk v0.3.2
[INFO] [stderr]     Checking is_ci v1.2.0
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling miette-derive v5.10.0
[INFO] [stderr]     Checking supports-unicode v2.1.0
[INFO] [stderr]     Checking supports-color v2.1.0
[INFO] [stderr]     Checking supports-hyperlinks v2.1.0
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking textwrap v0.15.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking similar v2.5.0
[INFO] [stderr]     Checking id-arena v2.2.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking chumsky v0.9.3
[INFO] [stderr]     Checking insta v1.38.0
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]     Checking miette v5.10.0
[INFO] [stderr]     Checking vicuna-compiler v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.47s
[INFO] running `Command { std: "docker" "inspect" "7a9a45b0f0a393f6e39e8e7073259250382e7a5023ceacf9109e0147976d7d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a9a45b0f0a393f6e39e8e7073259250382e7a5023ceacf9109e0147976d7d3f", kill_on_drop: false }`
[INFO] [stdout] 7a9a45b0f0a393f6e39e8e7073259250382e7a5023ceacf9109e0147976d7d3f