[INFO] fetching crate two_three 0.0.6...
[INFO] testing two_three-0.0.6 against 1.75.0 for beta-1.76-1
[INFO] extracting crate two_three 0.0.6 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate two_three 0.0.6 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate two_three 0.0.6
[INFO] finished tweaking crates.io crate two_three 0.0.6
[INFO] tweaked toml for crates.io crate two_three 0.0.6 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" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b3e5b11aa4d4364b410b19e0c8663344168e26c3d440c9313e495392e62fa5d
[INFO] running `Command { std: "docker" "start" "-a" "0b3e5b11aa4d4364b410b19e0c8663344168e26c3d440c9313e495392e62fa5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b3e5b11aa4d4364b410b19e0c8663344168e26c3d440c9313e495392e62fa5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b3e5b11aa4d4364b410b19e0c8663344168e26c3d440c9313e495392e62fa5d", kill_on_drop: false }`
[INFO] [stdout] 0b3e5b11aa4d4364b410b19e0c8663344168e26c3d440c9313e495392e62fa5d
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb50aec6f66e2ee7989fca966e3f55bc650aece3ca2c95e3248b0ff0bbd558b9
[INFO] running `Command { std: "docker" "start" "-a" "bb50aec6f66e2ee7989fca966e3f55bc650aece3ca2c95e3248b0ff0bbd558b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling two_three v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "bb50aec6f66e2ee7989fca966e3f55bc650aece3ca2c95e3248b0ff0bbd558b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb50aec6f66e2ee7989fca966e3f55bc650aece3ca2c95e3248b0ff0bbd558b9", kill_on_drop: false }`
[INFO] [stdout] bb50aec6f66e2ee7989fca966e3f55bc650aece3ca2c95e3248b0ff0bbd558b9
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bf26f41572dbb5b2cd14594a49840197da0cd7d221bbb3b9f64251a17c66fe3
[INFO] running `Command { std: "docker" "start" "-a" "1bf26f41572dbb5b2cd14594a49840197da0cd7d221bbb3b9f64251a17c66fe3", kill_on_drop: false }`
[INFO] [stderr]    Compiling two_three v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/test_tree.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `two_three` (test "test_tree") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1bf26f41572dbb5b2cd14594a49840197da0cd7d221bbb3b9f64251a17c66fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bf26f41572dbb5b2cd14594a49840197da0cd7d221bbb3b9f64251a17c66fe3", kill_on_drop: false }`
[INFO] [stdout] 1bf26f41572dbb5b2cd14594a49840197da0cd7d221bbb3b9f64251a17c66fe3
