[INFO] fetching crate erdos 0.4.0...
[INFO] testing erdos-0.4.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate erdos 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate erdos 0.4.0 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 erdos 0.4.0
[INFO] finished tweaking crates.io crate erdos 0.4.0
[INFO] tweaked toml for crates.io crate erdos 0.4.0 written to /workspace/builds/worker-3-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] [stderr]     Updating crates.io index
[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] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c5589a59f096453545dc7b76a9c8fe7478ca2ea9ad1b3f7a766f569b307b9787
[INFO] running `Command { std: "docker" "start" "-a" "c5589a59f096453545dc7b76a9c8fe7478ca2ea9ad1b3f7a766f569b307b9787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5589a59f096453545dc7b76a9c8fe7478ca2ea9ad1b3f7a766f569b307b9787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5589a59f096453545dc7b76a9c8fe7478ca2ea9ad1b3f7a766f569b307b9787", kill_on_drop: false }`
[INFO] [stdout] c5589a59f096453545dc7b76a9c8fe7478ca2ea9ad1b3f7a766f569b307b9787
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fd30c3dff0eccf02116bc00a3ff3d9c5bf0c4bf39b1278538795601e155f9a24
[INFO] running `Command { std: "docker" "start" "-a" "fd30c3dff0eccf02116bc00a3ff3d9c5bf0c4bf39b1278538795601e155f9a24", kill_on_drop: false }`
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[INFO] [stderr]    Compiling erdos v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:139:1
[INFO] [stdout]     |
[INFO] [stdout] 139 | #![feature(specialization)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:140:1
[INFO] [stdout]     |
[INFO] [stdout] 140 | #![feature(box_into_pin)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 | #![feature(box_into_pin)]
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_into_pin` has been stable since 1.63.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 | #![feature(box_into_pin)]
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `erdos` (lib) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "fd30c3dff0eccf02116bc00a3ff3d9c5bf0c4bf39b1278538795601e155f9a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd30c3dff0eccf02116bc00a3ff3d9c5bf0c4bf39b1278538795601e155f9a24", kill_on_drop: false }`
[INFO] [stdout] fd30c3dff0eccf02116bc00a3ff3d9c5bf0c4bf39b1278538795601e155f9a24
