[INFO] fetching crate tree_view 0.1.2...
[INFO] testing tree_view-0.1.2 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate tree_view 0.1.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate tree_view 0.1.2
[INFO] finished tweaking crates.io crate tree_view 0.1.2
[INFO] tweaked toml for crates.io crate tree_view 0.1.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree_view 0.1.2 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tree_view 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | homepage = "https://github.com/the-forklift/tree_view"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 27 | repository = "https://github.com/the-forklift/tree_view"
[INFO] [stderr]    |              -------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `tree_view` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8
[INFO] running `Command { std: "docker" "start" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | homepage = "https://github.com/the-forklift/tree_view"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 27 | repository = "https://github.com/the-forklift/tree_view"
[INFO] [stderr]    |              -------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `tree_view` (manifest) generated 1 warning
[INFO] [stderr]    Compiling tree_view v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(allocator_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `allocator_api` has been partially stabilized since 1.100.0 and is succeeded by the feature `allocator_ext`
[INFO] [stdout]   --> src/main.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(allocator_api)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] help: if you are using features which are still unstable, change to using `allocator_ext`
[INFO] [stdout]    |
[INFO] [stdout] 10 - #![feature(allocator_api)]
[INFO] [stdout] 10 + #![feature(allocator_ext)]
[INFO] [stdout]    |
[INFO] [stdout] help: if you are using features which are now stable, remove this line
[INFO] [stdout]    |
[INFO] [stdout] 10 - #![feature(allocator_api)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree_view` (bin "tree_view_test") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8", kill_on_drop: false }`
[INFO] [stdout] d0195877c9036e23548f2d157cf1b46284f061b35de6ce86ec2993130caed7d8
