[INFO] fetching crate arrow-ipc 49.0.0...
[INFO] checking arrow-ipc-49.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate arrow-ipc 49.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate arrow-ipc 49.0.0 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 arrow-ipc 49.0.0
[INFO] finished tweaking crates.io crate arrow-ipc 49.0.0
[INFO] tweaked toml for crates.io crate arrow-ipc 49.0.0 written to /workspace/builds/worker-5-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 86 packages
[INFO] [stderr]       Adding arrow-array v49.0.0 (latest: v51.0.0)
[INFO] [stderr]       Adding arrow-buffer v49.0.0 (latest: v51.0.0)
[INFO] [stderr]       Adding arrow-cast v49.0.0 (latest: v51.0.0)
[INFO] [stderr]       Adding arrow-data v49.0.0 (latest: v51.0.0)
[INFO] [stderr]       Adding arrow-schema v49.0.0 (latest: v51.0.0)
[INFO] [stderr]       Adding arrow-select v49.0.0 (latest: v51.0.0)
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded lz4_flex v0.11.3
[INFO] [stderr]   Downloaded const-random v0.1.18
[INFO] [stderr]   Downloaded const-random-macro v0.1.16
[INFO] [stderr]   Downloaded num v0.4.1
[INFO] [stderr]   Downloaded flatbuffers v23.5.26
[INFO] [stderr]   Downloaded twox-hash v1.6.3
[INFO] [stderr]   Downloaded arrow-schema v49.0.0
[INFO] [stderr]   Downloaded iana-time-zone v0.1.60
[INFO] [stderr]   Downloaded num-complex v0.4.5
[INFO] [stderr]   Downloaded tiny-keccak v2.0.2
[INFO] [stderr]   Downloaded arrow-select v49.0.0
[INFO] [stderr]   Downloaded windows-core v0.52.0
[INFO] [stderr]   Downloaded lexical-parse-integer v0.8.6
[INFO] [stderr]   Downloaded arrow-cast v49.0.0
[INFO] [stderr]   Downloaded lexical-write-integer v0.8.5
[INFO] [stderr]   Downloaded arrow-buffer v49.0.0
[INFO] [stderr]   Downloaded half v2.4.0
[INFO] [stderr]   Downloaded lexical-write-float v0.8.5
[INFO] [stderr]   Downloaded libm v0.2.8
[INFO] [stderr]   Downloaded lexical-parse-float v0.8.5
[INFO] [stderr]   Downloaded arrow-array v49.0.0
[INFO] [stderr]   Downloaded chrono v0.4.37
[INFO] [stderr]   Downloaded lexical-util v0.8.5
[INFO] [stderr]   Downloaded num-bigint v0.4.4
[INFO] [stderr]   Downloaded lexical-core v0.8.5
[INFO] [stderr]   Downloaded arrow-data v49.0.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76b7278c8397d470751ca1f97cf56393132d6530c49747d862729fdea83cee93
[INFO] running `Command { std: "docker" "start" "-a" "76b7278c8397d470751ca1f97cf56393132d6530c49747d862729fdea83cee93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76b7278c8397d470751ca1f97cf56393132d6530c49747d862729fdea83cee93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76b7278c8397d470751ca1f97cf56393132d6530c49747d862729fdea83cee93", kill_on_drop: false }`
[INFO] [stdout] 76b7278c8397d470751ca1f97cf56393132d6530c49747d862729fdea83cee93
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5d4eac5ae2bf14f9ac672997b734f5525d7148807ad80a1a155c7670e01e6e4
[INFO] running `Command { std: "docker" "start" "-a" "e5d4eac5ae2bf14f9ac672997b734f5525d7148807ad80a1a155c7670e01e6e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking arrow-schema v49.0.0
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking lexical-write-integer v0.8.5
[INFO] [stderr]     Checking lexical-parse-integer v0.8.6
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking lexical-write-float v0.8.5
[INFO] [stderr]     Checking lexical-parse-float v0.8.5
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]    Compiling flatbuffers v23.5.26
[INFO] [stderr]     Checking lexical-core v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking arrow-buffer v49.0.0
[INFO] [stderr]     Checking arrow-data v49.0.0
[INFO] [stderr]     Checking arrow-array v49.0.0
[INFO] [stderr]     Checking arrow-select v49.0.0
[INFO] [stderr]     Checking arrow-cast v49.0.0
[INFO] [stderr]     Checking arrow-ipc v49.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]     --> src/writer.rs:1373:9
[INFO] [stdout]      |
[INFO] [stdout] 1373 |     use std::sync::Arc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1383 |     use super::*;
[INFO] [stdout]      |         -------- the item `Arc` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DataType` is imported redundantly
[INFO] [stdout]     --> src/writer.rs:1378:9
[INFO] [stdout]      |
[INFO] [stdout] 1378 |     use arrow_schema::DataType;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1383 |     use super::*;
[INFO] [stdout]      |         -------- the item `DataType` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.89s
[INFO] running `Command { std: "docker" "inspect" "e5d4eac5ae2bf14f9ac672997b734f5525d7148807ad80a1a155c7670e01e6e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d4eac5ae2bf14f9ac672997b734f5525d7148807ad80a1a155c7670e01e6e4", kill_on_drop: false }`
[INFO] [stdout] e5d4eac5ae2bf14f9ac672997b734f5525d7148807ad80a1a155c7670e01e6e4
[INFO] checking arrow-ipc-49.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate arrow-ipc 49.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate arrow-ipc 49.0.0 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 arrow-ipc 49.0.0
[INFO] finished tweaking crates.io crate arrow-ipc 49.0.0
[INFO] tweaked toml for crates.io crate arrow-ipc 49.0.0 written to /workspace/builds/worker-5-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]     Blocking waiting for file lock on package cache
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2be1f8e62b468895251641ad38988a81e21c7b29035f1243fb12c0bd58fae0d0
[INFO] running `Command { std: "docker" "start" "-a" "2be1f8e62b468895251641ad38988a81e21c7b29035f1243fb12c0bd58fae0d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2be1f8e62b468895251641ad38988a81e21c7b29035f1243fb12c0bd58fae0d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be1f8e62b468895251641ad38988a81e21c7b29035f1243fb12c0bd58fae0d0", kill_on_drop: false }`
[INFO] [stdout] 2be1f8e62b468895251641ad38988a81e21c7b29035f1243fb12c0bd58fae0d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5b9ca37e234eebec0b308b22450bd83f69f4372a87c0be6cc50777065100ced4
[INFO] running `Command { std: "docker" "start" "-a" "5b9ca37e234eebec0b308b22450bd83f69f4372a87c0be6cc50777065100ced4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking arrow-schema v49.0.0
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking lexical-parse-integer v0.8.6
[INFO] [stderr]     Checking lexical-write-integer v0.8.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking lexical-write-float v0.8.5
[INFO] [stderr]     Checking lexical-parse-float v0.8.5
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling flatbuffers v23.5.26
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking lexical-core v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking arrow-buffer v49.0.0
[INFO] [stderr]     Checking arrow-data v49.0.0
[INFO] [stderr]     Checking arrow-array v49.0.0
[INFO] [stderr]     Checking arrow-select v49.0.0
[INFO] [stderr]     Checking arrow-cast v49.0.0
[INFO] [stderr]     Checking arrow-ipc v49.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]     --> src/writer.rs:1373:9
[INFO] [stdout]      |
[INFO] [stdout] 1373 |     use std::sync::Arc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1383 |     use super::*;
[INFO] [stdout]      |         -------- the item `Arc` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DataType` is imported redundantly
[INFO] [stdout]     --> src/writer.rs:1378:9
[INFO] [stdout]      |
[INFO] [stdout] 1378 |     use arrow_schema::DataType;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1383 |     use super::*;
[INFO] [stdout]      |         -------- the item `DataType` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.45s
[INFO] running `Command { std: "docker" "inspect" "5b9ca37e234eebec0b308b22450bd83f69f4372a87c0be6cc50777065100ced4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b9ca37e234eebec0b308b22450bd83f69f4372a87c0be6cc50777065100ced4", kill_on_drop: false }`
[INFO] [stdout] 5b9ca37e234eebec0b308b22450bd83f69f4372a87c0be6cc50777065100ced4