[INFO] fetching crate bottomless 0.1.16...
[INFO] checking bottomless-0.1.16 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate bottomless 0.1.16 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate bottomless 0.1.16 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 bottomless 0.1.16
[INFO] finished tweaking crates.io crate bottomless 0.1.16
[INFO] tweaked toml for crates.io crate bottomless 0.1.16 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 192 packages
[INFO] [stderr]       Adding async-compression v0.3.15 (latest: v0.4.8)
[INFO] [stderr]       Adding atomic v0.5.3 (latest: v0.6.0)
[INFO] [stderr]       Adding aws-config v0.52.0 (latest: v1.1.9)
[INFO] [stderr]       Adding aws-endpoint v0.52.0 (latest: v0.60.3)
[INFO] [stderr]       Adding aws-http v0.52.0 (latest: v0.60.5)
[INFO] [stderr]       Adding aws-sdk-s3 v0.22.0 (latest: v1.21.0)
[INFO] [stderr]       Adding aws-sdk-sso v0.22.0 (latest: v1.18.0)
[INFO] [stderr]       Adding aws-sdk-sts v0.22.0 (latest: v1.18.0)
[INFO] [stderr]       Adding aws-sig-auth v0.52.0 (latest: v0.60.3)
[INFO] [stderr]       Adding aws-sigv4 v0.52.1 (latest: v1.2.0)
[INFO] [stderr]       Adding aws-smithy-async v0.52.0 (latest: v1.2.1)
[INFO] [stderr]       Adding aws-smithy-checksums v0.52.0 (latest: v0.60.7)
[INFO] [stderr]       Adding aws-smithy-client v0.52.0 (latest: v0.60.3)
[INFO] [stderr]       Adding aws-smithy-eventstream v0.52.0 (latest: v0.60.4)
[INFO] [stderr]       Adding aws-smithy-http v0.52.0 (latest: v0.60.7)
[INFO] [stderr]       Adding aws-smithy-http-tower v0.52.0 (latest: v0.60.3)
[INFO] [stderr]       Adding aws-smithy-json v0.52.0 (latest: v0.60.7)
[INFO] [stderr]       Adding aws-smithy-query v0.52.0 (latest: v0.60.7)
[INFO] [stderr]       Adding aws-smithy-types v0.52.0 (latest: v1.1.8)
[INFO] [stderr]       Adding aws-smithy-xml v0.52.0 (latest: v0.60.7)
[INFO] [stderr]       Adding aws-types v0.52.0 (latest: v1.1.8)
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding base64-simd v0.7.0 (latest: v0.8.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding fastrand v1.9.0 (latest: v2.0.2)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding h2 v0.3.26 (latest: v0.4.4)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding http-body v0.4.6 (latest: v1.0.0)
[INFO] [stderr]       Adding hyper v0.14.28 (latest: v1.2.0)
[INFO] [stderr]       Adding hyper-rustls v0.23.2 (latest: v0.27.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding outref v0.1.0 (latest: v0.5.1)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding ring v0.16.20 (latest: v0.17.8)
[INFO] [stderr]       Adding rustls v0.20.9 (latest: v0.23.4)
[INFO] [stderr]       Adding rustls-native-certs v0.6.3 (latest: v0.7.0)
[INFO] [stderr]       Adding rustls-pemfile v1.0.4 (latest: v2.1.1)
[INFO] [stderr]       Adding spin v0.5.2 (latest: v0.9.8)
[INFO] [stderr]       Adding tokio-rustls v0.23.4 (latest: v0.26.0)
[INFO] [stderr]       Adding untrusted v0.7.1 (latest: v0.9.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding webpki-roots v0.22.6 (latest: v0.26.1)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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 base64-simd v0.7.0
[INFO] [stderr]   Downloaded outref v0.1.0
[INFO] [stderr]   Downloaded simd-abstraction v0.7.1
[INFO] [stderr]   Downloaded aws-types v0.52.0
[INFO] [stderr]   Downloaded atomic v0.5.3
[INFO] [stderr]   Downloaded aws-smithy-query v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-eventstream v0.52.0
[INFO] [stderr]   Downloaded aws-sig-auth v0.52.0
[INFO] [stderr]   Downloaded tokio-stream v0.1.15
[INFO] [stderr]   Downloaded hyper-rustls v0.23.2
[INFO] [stderr]   Downloaded aws-sdk-sso v0.22.0
[INFO] [stderr]   Downloaded aws-sdk-sts v0.22.0
[INFO] [stderr]   Downloaded rustls v0.20.9
[INFO] [stderr]   Downloaded aws-sdk-s3 v0.22.0
[INFO] [stderr]   Downloaded aws-config v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-json v0.52.0
[INFO] [stderr]   Downloaded aws-endpoint v0.52.0
[INFO] [stderr]   Downloaded aws-http v0.52.0
[INFO] [stderr]   Downloaded aws-sigv4 v0.52.1
[INFO] [stderr]   Downloaded crc32c v0.6.5
[INFO] [stderr]   Downloaded aws-smithy-checksums v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-xml v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-async v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-http-tower v0.52.0
[INFO] [stderr]   Downloaded tokio-rustls v0.23.4
[INFO] [stderr]   Downloaded webpki v0.22.4
[INFO] [stderr]   Downloaded aws-smithy-types v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-client v0.52.0
[INFO] [stderr]   Downloaded aws-smithy-http v0.52.0
[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] b08e19c2d8b2bd98029c03c849dfb6f8964eb2b97da3f2d614142e899bb2f9ec
[INFO] running `Command { std: "docker" "start" "-a" "b08e19c2d8b2bd98029c03c849dfb6f8964eb2b97da3f2d614142e899bb2f9ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b08e19c2d8b2bd98029c03c849dfb6f8964eb2b97da3f2d614142e899bb2f9ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08e19c2d8b2bd98029c03c849dfb6f8964eb2b97da3f2d614142e899bb2f9ec", kill_on_drop: false }`
[INFO] [stdout] b08e19c2d8b2bd98029c03c849dfb6f8964eb2b97da3f2d614142e899bb2f9ec
[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] 67884f189fdc96aa36f507317ee6cf73aaae8b4cd50c54e7f6d200d728f726bb
[INFO] running `Command { std: "docker" "start" "-a" "67884f189fdc96aa36f507317ee6cf73aaae8b4cd50c54e7f6d200d728f726bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking outref v0.1.0
[INFO] [stderr]     Checking simd-abstraction v0.7.1
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking base64-simd v0.7.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking ring v0.17.8
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking bytes-utils v0.1.4
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking webpki v0.22.4
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking aws-smithy-types v0.52.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking rustls-native-certs v0.6.3
[INFO] [stderr]     Checking aws-smithy-eventstream v0.52.0
[INFO] [stderr]     Checking webpki-roots v0.22.6
[INFO] [stderr]    Compiling aws-types v0.52.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]    Compiling crc32c v0.6.5
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]     Checking urlencoding v2.1.3
[INFO] [stderr]     Checking aws-smithy-query v0.52.0
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking aws-smithy-xml v0.52.0
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking aws-smithy-json v0.52.0
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking atomic v0.5.3
[INFO] [stderr]     Checking crc v3.0.1
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking async-compression v0.3.15
[INFO] [stderr]     Checking aws-smithy-async v0.52.0
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking aws-smithy-http v0.52.0
[INFO] [stderr]     Checking hyper-rustls v0.23.2
[INFO] [stderr]     Checking aws-smithy-http-tower v0.52.0
[INFO] [stderr]     Checking aws-sigv4 v0.52.1
[INFO] [stderr]     Checking aws-smithy-checksums v0.52.0
[INFO] [stderr]     Checking aws-smithy-client v0.52.0
[INFO] [stderr]     Checking aws-endpoint v0.52.0
[INFO] [stderr]     Checking aws-sig-auth v0.52.0
[INFO] [stderr]     Checking aws-http v0.52.0
[INFO] [stderr]     Checking aws-sdk-sso v0.22.0
[INFO] [stderr]     Checking aws-sdk-sts v0.22.0
[INFO] [stderr]     Checking aws-sdk-s3 v0.22.0
[INFO] [stderr]     Checking aws-config v0.52.0
[INFO] [stderr]     Checking bottomless v0.1.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function pointers are not nullable, so checking them for null will always return false
[INFO] [stdout]    --> src/lib.rs:332:27
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let busy_handler = if (busy_handler as *const c_void).is_null() {
[INFO] [stdout]     |                           ^------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            expression has type `extern "C" fn(*mut c_void) -> i32`
[INFO] [stdout]     |
[INFO] [stdout]     = help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
[INFO] [stdout]     = note: `#[warn(useless_ptr_null_checks)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointers are not nullable, so checking them for null will always return false
[INFO] [stdout]    --> src/lib.rs:332:27
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let busy_handler = if (busy_handler as *const c_void).is_null() {
[INFO] [stdout]     |                           ^------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            expression has type `extern "C" fn(*mut c_void) -> i32`
[INFO] [stdout]     |
[INFO] [stdout]     = help: wrap the function pointer inside an `Option` and use `Option::is_none` to check for null pointer value
[INFO] [stdout]     = note: `#[warn(useless_ptr_null_checks)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 56.84s
[INFO] running `Command { std: "docker" "inspect" "67884f189fdc96aa36f507317ee6cf73aaae8b4cd50c54e7f6d200d728f726bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67884f189fdc96aa36f507317ee6cf73aaae8b4cd50c54e7f6d200d728f726bb", kill_on_drop: false }`
[INFO] [stdout] 67884f189fdc96aa36f507317ee6cf73aaae8b4cd50c54e7f6d200d728f726bb