[INFO] fetching crate duk 0.3.0...
[INFO] checking duk-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate duk 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate duk 0.3.0 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 duk 0.3.0
[INFO] finished tweaking crates.io crate duk 0.3.0
[INFO] tweaked toml for crates.io crate duk 0.3.0 written to /workspace/builds/worker-4-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 36 packages
[INFO] [stderr]       Adding env_logger v0.7.1 (latest: v0.11.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[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 duk-sys v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7e2d36989700f26b1aa70f4ebe08a3cf855ca98e7246f3608d863b32d433508a
[INFO] running `Command { std: "docker" "start" "-a" "7e2d36989700f26b1aa70f4ebe08a3cf855ca98e7246f3608d863b32d433508a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e2d36989700f26b1aa70f4ebe08a3cf855ca98e7246f3608d863b32d433508a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2d36989700f26b1aa70f4ebe08a3cf855ca98e7246f3608d863b32d433508a", kill_on_drop: false }`
[INFO] [stdout] 7e2d36989700f26b1aa70f4ebe08a3cf855ca98e7246f3608d863b32d433508a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b57a7a063982b4d74cece62c3b14db88f350a7db01fd1f1196d347fc777e3bab
[INFO] running `Command { std: "docker" "start" "-a" "b57a7a063982b4d74cece62c3b14db88f350a7db01fd1f1196d347fc777e3bab", kill_on_drop: false }`
[INFO] [stderr]    Compiling duk-sys v0.3.0
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking duk v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `collections` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:928:9
[INFO] [stdout]     |
[INFO] [stdout] 926 |     use super::*;
[INFO] [stdout]     |         -------- the item `collections` is already imported here
[INFO] [stdout] 927 |
[INFO] [stdout] 928 |     use std::collections;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fmt` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:929:9
[INFO] [stdout]     |
[INFO] [stdout] 926 |     use super::*;
[INFO] [stdout]     |         -------- the item `fmt` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 929 |     use std::fmt;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:932:9
[INFO] [stdout]     |
[INFO] [stdout] 932 |     use log;
[INFO] [stdout]     |         ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.43s
[INFO] running `Command { std: "docker" "inspect" "b57a7a063982b4d74cece62c3b14db88f350a7db01fd1f1196d347fc777e3bab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b57a7a063982b4d74cece62c3b14db88f350a7db01fd1f1196d347fc777e3bab", kill_on_drop: false }`
[INFO] [stdout] b57a7a063982b4d74cece62c3b14db88f350a7db01fd1f1196d347fc777e3bab