[INFO] fetching crate png2wasm4src 0.1.0...
[INFO] checking png2wasm4src-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate png2wasm4src 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate png2wasm4src 0.1.0 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 png2wasm4src 0.1.0
[INFO] finished tweaking crates.io crate png2wasm4src 0.1.0
[INFO] tweaked toml for crates.io crate png2wasm4src 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate png2wasm4src 0.1.0 already has a lockfile, it will not be regenerated
[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 deflate v0.9.1
[INFO] [stderr]   Downloaded png v0.17.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f5cf39b4b8ff214f9a55eb2964ffff16c986607ae1f6111dd45fa2c565054a8d
[INFO] running `Command { std: "docker" "start" "-a" "f5cf39b4b8ff214f9a55eb2964ffff16c986607ae1f6111dd45fa2c565054a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5cf39b4b8ff214f9a55eb2964ffff16c986607ae1f6111dd45fa2c565054a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5cf39b4b8ff214f9a55eb2964ffff16c986607ae1f6111dd45fa2c565054a8d", kill_on_drop: false }`
[INFO] [stdout] f5cf39b4b8ff214f9a55eb2964ffff16c986607ae1f6111dd45fa2c565054a8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9f76a467b84de99cc6dd3bf057f319bd81fd10a8d0c52e77e92ad6daf091a7c2
[INFO] running `Command { std: "docker" "start" "-a" "9f76a467b84de99cc6dd3bf057f319bd81fd10a8d0c52e77e92ad6daf091a7c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking deflate v0.9.1
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking png v0.17.2
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking png2wasm4src v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Flags` is imported redundantly
[INFO] [stdout]    --> src/rust.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     use super::*;
[INFO] [stdout]     |         -------- the item `Flags` is already imported here
[INFO] [stdout] 138 |
[INFO] [stdout] 139 |     use crate::Flags;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[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 15.69s
[INFO] running `Command { std: "docker" "inspect" "9f76a467b84de99cc6dd3bf057f319bd81fd10a8d0c52e77e92ad6daf091a7c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f76a467b84de99cc6dd3bf057f319bd81fd10a8d0c52e77e92ad6daf091a7c2", kill_on_drop: false }`
[INFO] [stdout] 9f76a467b84de99cc6dd3bf057f319bd81fd10a8d0c52e77e92ad6daf091a7c2