[INFO] fetching crate static-linkedlist 0.1.2...
[INFO] testing static-linkedlist-0.1.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate static-linkedlist 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate static-linkedlist 0.1.2 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate static-linkedlist 0.1.2
[INFO] finished tweaking crates.io crate static-linkedlist 0.1.2
[INFO] tweaked toml for crates.io crate static-linkedlist 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d65ed8761cc7291a61e2f277beb7ea1b504209bc350e536e9b607f9237f9bbfb
[INFO] running `Command { std: "docker" "start" "-a" "d65ed8761cc7291a61e2f277beb7ea1b504209bc350e536e9b607f9237f9bbfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d65ed8761cc7291a61e2f277beb7ea1b504209bc350e536e9b607f9237f9bbfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d65ed8761cc7291a61e2f277beb7ea1b504209bc350e536e9b607f9237f9bbfb", kill_on_drop: false }`
[INFO] [stdout] d65ed8761cc7291a61e2f277beb7ea1b504209bc350e536e9b607f9237f9bbfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47badd5028bff116c5eeaeb4048676c593bb287b543da1e82a7595a76738516d
[INFO] running `Command { std: "docker" "start" "-a" "47badd5028bff116c5eeaeb4048676c593bb287b543da1e82a7595a76738516d", kill_on_drop: false }`
[INFO] [stderr]    Compiling static-linkedlist v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `static-linkedlist` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "47badd5028bff116c5eeaeb4048676c593bb287b543da1e82a7595a76738516d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47badd5028bff116c5eeaeb4048676c593bb287b543da1e82a7595a76738516d", kill_on_drop: false }`
[INFO] [stdout] 47badd5028bff116c5eeaeb4048676c593bb287b543da1e82a7595a76738516d