[INFO] fetching crate mcf-config-demo-settings 0.1.0...
[INFO] checking mcf-config-demo-settings-0.1.0 against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] extracting crate mcf-config-demo-settings 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mcf-config-demo-settings 0.1.0 on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcf-config-demo-settings 0.1.0
[INFO] finished tweaking crates.io crate mcf-config-demo-settings 0.1.0
[INFO] tweaked toml for crates.io crate mcf-config-demo-settings 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecb9261b5fd1cc6867a72fbfeb0ff89e24e3dcfda6fcc8b6d176b24d7f5100be
[INFO] running `Command { std: "docker" "start" "-a" "ecb9261b5fd1cc6867a72fbfeb0ff89e24e3dcfda6fcc8b6d176b24d7f5100be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecb9261b5fd1cc6867a72fbfeb0ff89e24e3dcfda6fcc8b6d176b24d7f5100be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecb9261b5fd1cc6867a72fbfeb0ff89e24e3dcfda6fcc8b6d176b24d7f5100be", kill_on_drop: false }`
[INFO] [stdout] ecb9261b5fd1cc6867a72fbfeb0ff89e24e3dcfda6fcc8b6d176b24d7f5100be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ba96f2e13984a3b27a4a897e5c1fcda955bc5830a39581cf9e1f7dc3855a471
[INFO] running `Command { std: "docker" "start" "-a" "5ba96f2e13984a3b27a4a897e5c1fcda955bc5830a39581cf9e1f7dc3855a471", kill_on_drop: false }`
[INFO] [stderr]     Checking mcf-config-demo-settings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `min_const_fn` has been stable since 1.31.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_const_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `min_const_fn` has been stable since 1.31.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_const_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "5ba96f2e13984a3b27a4a897e5c1fcda955bc5830a39581cf9e1f7dc3855a471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ba96f2e13984a3b27a4a897e5c1fcda955bc5830a39581cf9e1f7dc3855a471", kill_on_drop: false }`
[INFO] [stdout] 5ba96f2e13984a3b27a4a897e5c1fcda955bc5830a39581cf9e1f7dc3855a471