[INFO] fetching crate koto_serialize 0.12.0...
[INFO] checking koto_serialize-0.12.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate koto_serialize 0.12.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate koto_serialize 0.12.0 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 koto_serialize 0.12.0
[INFO] finished tweaking crates.io crate koto_serialize 0.12.0
[INFO] tweaked toml for crates.io crate koto_serialize 0.12.0 written to /workspace/builds/worker-2-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]     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 55 packages
[INFO] [stderr]       Adding koto_bytecode v0.12.0 (latest: v0.13.0)
[INFO] [stderr]       Adding koto_lexer v0.12.0 (latest: v0.13.0)
[INFO] [stderr]       Adding koto_memory v0.12.0 (latest: v0.13.0)
[INFO] [stderr]       Adding koto_parser v0.12.0 (latest: v0.13.0)
[INFO] [stderr]       Adding koto_runtime v0.12.0 (latest: v0.13.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded koto_parser v0.12.0
[INFO] [stderr]   Downloaded koto_bytecode v0.12.0
[INFO] [stderr]   Downloaded koto_lexer v0.12.0
[INFO] [stderr]   Downloaded koto_memory v0.12.0
[INFO] [stderr]   Downloaded koto_runtime v0.12.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e009ccdc02fea7bbf6d40fc80b9806108b3d5d9204ede401a8fb36c387731e91
[INFO] running `Command { std: "docker" "start" "-a" "e009ccdc02fea7bbf6d40fc80b9806108b3d5d9204ede401a8fb36c387731e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e009ccdc02fea7bbf6d40fc80b9806108b3d5d9204ede401a8fb36c387731e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e009ccdc02fea7bbf6d40fc80b9806108b3d5d9204ede401a8fb36c387731e91", kill_on_drop: false }`
[INFO] [stdout] e009ccdc02fea7bbf6d40fc80b9806108b3d5d9204ede401a8fb36c387731e91
[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=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] 5000c85e0e0b3c9abe87d4f78494e3b4d14cfc845c916a9cd28c0f90ba2e5621
[INFO] running `Command { std: "docker" "start" "-a" "5000c85e0e0b3c9abe87d4f78494e3b4d14cfc845c916a9cd28c0f90ba2e5621", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking koto_memory v0.12.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking dunce v1.0.4
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking koto_lexer v0.12.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking koto_parser v0.12.0
[INFO] [stderr]     Checking koto_bytecode v0.12.0
[INFO] [stderr]     Checking koto_runtime v0.12.0
[INFO] [stderr]     Checking koto_serialize v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.44s
[INFO] running `Command { std: "docker" "inspect" "5000c85e0e0b3c9abe87d4f78494e3b4d14cfc845c916a9cd28c0f90ba2e5621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5000c85e0e0b3c9abe87d4f78494e3b4d14cfc845c916a9cd28c0f90ba2e5621", kill_on_drop: false }`
[INFO] [stdout] 5000c85e0e0b3c9abe87d4f78494e3b4d14cfc845c916a9cd28c0f90ba2e5621
[INFO] checking koto_serialize-0.12.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate koto_serialize 0.12.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate koto_serialize 0.12.0 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 koto_serialize 0.12.0
[INFO] finished tweaking crates.io crate koto_serialize 0.12.0
[INFO] tweaked toml for crates.io crate koto_serialize 0.12.0 written to /workspace/builds/worker-2-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] [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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c4d56ffa782b5e028f6c9f47e4a7189151249e331d6864ee941bdf127f0f53d5
[INFO] running `Command { std: "docker" "start" "-a" "c4d56ffa782b5e028f6c9f47e4a7189151249e331d6864ee941bdf127f0f53d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4d56ffa782b5e028f6c9f47e4a7189151249e331d6864ee941bdf127f0f53d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4d56ffa782b5e028f6c9f47e4a7189151249e331d6864ee941bdf127f0f53d5", kill_on_drop: false }`
[INFO] [stdout] c4d56ffa782b5e028f6c9f47e4a7189151249e331d6864ee941bdf127f0f53d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b2107396cf6acc38d08c3bf9351cb140ce075bd958a791f03f81d05b975512ee
[INFO] running `Command { std: "docker" "start" "-a" "b2107396cf6acc38d08c3bf9351cb140ce075bd958a791f03f81d05b975512ee", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking koto_memory v0.12.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking dunce v1.0.4
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking koto_lexer v0.12.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking koto_parser v0.12.0
[INFO] [stderr]     Checking koto_bytecode v0.12.0
[INFO] [stderr]     Checking koto_runtime v0.12.0
[INFO] [stderr]     Checking koto_serialize v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.08s
[INFO] running `Command { std: "docker" "inspect" "b2107396cf6acc38d08c3bf9351cb140ce075bd958a791f03f81d05b975512ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2107396cf6acc38d08c3bf9351cb140ce075bd958a791f03f81d05b975512ee", kill_on_drop: false }`
[INFO] [stdout] b2107396cf6acc38d08c3bf9351cb140ce075bd958a791f03f81d05b975512ee