[INFO] fetching crate as-is 0.0.29...
[INFO] checking as-is-0.0.29 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate as-is 0.0.29 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate as-is 0.0.29 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate as-is 0.0.29
[INFO] finished tweaking crates.io crate as-is 0.0.29
[INFO] tweaked toml for crates.io crate as-is 0.0.29 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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded siphasher v1.0.1
[INFO] [stderr]   Downloaded char-buf v0.1.2
[INFO] [stderr]   Downloaded ref-ops v0.2.5
[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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9134c31b17b014d9f9beaee85732d2e624e91590b0bd1b0e680b575e67c4649
[INFO] running `Command { std: "docker" "start" "-a" "f9134c31b17b014d9f9beaee85732d2e624e91590b0bd1b0e680b575e67c4649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9134c31b17b014d9f9beaee85732d2e624e91590b0bd1b0e680b575e67c4649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9134c31b17b014d9f9beaee85732d2e624e91590b0bd1b0e680b575e67c4649", kill_on_drop: false }`
[INFO] [stdout] f9134c31b17b014d9f9beaee85732d2e624e91590b0bd1b0e680b575e67c4649
[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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bf36a8f441e8b285fb5af0a8d8a9148ef797ab58909527fb55170c439d400b0
[INFO] running `Command { std: "docker" "start" "-a" "7bf36a8f441e8b285fb5af0a8d8a9148ef797ab58909527fb55170c439d400b0", kill_on_drop: false }`
[INFO] [stderr]     Checking ref-ops v0.2.5
[INFO] [stderr]     Checking char-buf v0.1.2
[INFO] [stderr]     Checking siphasher v1.0.1
[INFO] [stderr]     Checking as-is v0.0.29 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]  --> src/tests.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::*;
[INFO] [stdout]   |     -------- the item `Cow` is already imported here
[INFO] [stdout] 2 | #[cfg(feature = "alloc")]
[INFO] [stdout] 3 | use alloc::{borrow::Cow, vec};
[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 1.77s
[INFO] running `Command { std: "docker" "inspect" "7bf36a8f441e8b285fb5af0a8d8a9148ef797ab58909527fb55170c439d400b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bf36a8f441e8b285fb5af0a8d8a9148ef797ab58909527fb55170c439d400b0", kill_on_drop: false }`
[INFO] [stdout] 7bf36a8f441e8b285fb5af0a8d8a9148ef797ab58909527fb55170c439d400b0
