[INFO] fetching crate serialimage 2.0.0...
[INFO] checking serialimage-2.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate serialimage 2.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate serialimage 2.0.0 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 serialimage 2.0.0
[INFO] finished tweaking crates.io crate serialimage 2.0.0
[INFO] tweaked toml for crates.io crate serialimage 2.0.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 document-features v0.2.8
[INFO] [stderr]   Downloaded autotools v0.2.6
[INFO] [stderr]   Downloaded litrs v0.4.1
[INFO] [stderr]   Downloaded fitsio-sys v0.5.2
[INFO] [stderr]   Downloaded fitsio v0.21.2
[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] 262f5906e45208db9f835989b5fc89024343a986dae6dd2d773f40539f6b0fe3
[INFO] running `Command { std: "docker" "start" "-a" "262f5906e45208db9f835989b5fc89024343a986dae6dd2d773f40539f6b0fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "262f5906e45208db9f835989b5fc89024343a986dae6dd2d773f40539f6b0fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "262f5906e45208db9f835989b5fc89024343a986dae6dd2d773f40539f6b0fe3", kill_on_drop: false }`
[INFO] [stdout] 262f5906e45208db9f835989b5fc89024343a986dae6dd2d773f40539f6b0fe3
[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] 778378ebd746cb7e1f3b6d4969bc96ec811e9d59f3eef0caa0ffc8d74cd75eb5
[INFO] running `Command { std: "docker" "start" "-a" "778378ebd746cb7e1f3b6d4969bc96ec811e9d59f3eef0caa0ffc8d74cd75eb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking weezl v0.1.8
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.11
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]    Compiling serialimage v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking qoi v0.4.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking zune-inflate v0.2.54
[INFO] [stderr]     Checking fdeflate v0.3.4
[INFO] [stderr]     Checking gif v0.13.1
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]    Compiling document-features v0.2.8
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking png v0.17.13
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking exr v1.72.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking jpeg-decoder v0.3.1
[INFO] [stderr]     Checking tiff v0.9.1
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use serde_json::{self};
[INFO] [stdout]    |                      ^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 17.32s
[INFO] running `Command { std: "docker" "inspect" "778378ebd746cb7e1f3b6d4969bc96ec811e9d59f3eef0caa0ffc8d74cd75eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778378ebd746cb7e1f3b6d4969bc96ec811e9d59f3eef0caa0ffc8d74cd75eb5", kill_on_drop: false }`
[INFO] [stdout] 778378ebd746cb7e1f3b6d4969bc96ec811e9d59f3eef0caa0ffc8d74cd75eb5