[INFO] fetching crate image_colors 0.5.1...
[INFO] checking image_colors-0.5.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate image_colors 0.5.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate image_colors 0.5.1 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 image_colors 0.5.1
[INFO] finished tweaking crates.io crate image_colors 0.5.1
[INFO] tweaked toml for crates.io crate image_colors 0.5.1 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]     Updating crates.io index
[INFO] [stderr]      Locking 52 packages
[INFO] [stderr]       Adding aho-corasick v0.6.10 (latest: v1.1.3)
[INFO] [stderr]       Adding ansi_term v0.9.0 (latest: v0.12.1)
[INFO] [stderr]       Adding bitflags v0.9.1 (latest: v2.5.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding deflate v0.7.20 (latest: v1.0.0)
[INFO] [stderr]       Adding env_logger v0.4.3 (latest: v0.11.3)
[INFO] [stderr]       Adding gif v0.9.2 (latest: v0.13.1)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding image v0.15.0 (latest: v0.25.1)
[INFO] [stderr]       Adding inflate v0.2.0 (latest: v0.4.5)
[INFO] [stderr]       Adding jpeg-decoder v0.1.22 (latest: v0.3.1)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] [stderr]       Adding num-rational v0.1.42 (latest: v0.4.1)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding png v0.9.0 (latest: v0.17.13)
[INFO] [stderr]       Adding regex v0.2.11 (latest: v1.10.4)
[INFO] [stderr]       Adding regex-syntax v0.5.6 (latest: v0.8.3)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding thread_local v0.3.6 (latest: v1.1.8)
[INFO] [stderr]       Adding ucd-util v0.1.10 (latest: v0.2.1)
[INFO] [stderr]       Adding yaml-rust v0.3.5 (latest: v0.4.5)
[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 num-rational v0.1.42
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded enum_primitive v0.1.1
[INFO] [stderr]   Downloaded lzw v0.10.0
[INFO] [stderr]   Downloaded inflate v0.2.0
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded deflate v0.7.20
[INFO] [stderr]   Downloaded image v0.15.0
[INFO] [stderr]   Downloaded png v0.9.0
[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] f63cc5a283c6ad3c43c1c00a229885ee32958ba42987bd75f0dddc78f9fdacfa
[INFO] running `Command { std: "docker" "start" "-a" "f63cc5a283c6ad3c43c1c00a229885ee32958ba42987bd75f0dddc78f9fdacfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f63cc5a283c6ad3c43c1c00a229885ee32958ba42987bd75f0dddc78f9fdacfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f63cc5a283c6ad3c43c1c00a229885ee32958ba42987bd75f0dddc78f9fdacfa", kill_on_drop: false }`
[INFO] [stdout] f63cc5a283c6ad3c43c1c00a229885ee32958ba42987bd75f0dddc78f9fdacfa
[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] a433f720be771640a2df92e058112701243fbc7b40d00e4d8027fc33161bc617
[INFO] running `Command { std: "docker" "start" "-a" "a433f720be771640a2df92e058112701243fbc7b40d00e4d8027fc33161bc617", kill_on_drop: false }`
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking png v0.9.0
[INFO] [stderr]     Checking image v0.15.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking image_colors v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |     use super::*;
[INFO] [stdout]     |         -------- the item `std` is already imported here
[INFO] [stdout] 154 |     use std;
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |     use std;
[INFO] [stdout]     |         ^^^ the item `std` is already imported by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "a433f720be771640a2df92e058112701243fbc7b40d00e4d8027fc33161bc617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a433f720be771640a2df92e058112701243fbc7b40d00e4d8027fc33161bc617", kill_on_drop: false }`
[INFO] [stdout] a433f720be771640a2df92e058112701243fbc7b40d00e4d8027fc33161bc617