[INFO] fetching crate get_len_base_10_as_usize 0.1.6...
[INFO] testing get_len_base_10_as_usize-0.1.6 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate get_len_base_10_as_usize 0.1.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate get_len_base_10_as_usize 0.1.6 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate get_len_base_10_as_usize 0.1.6
[INFO] finished tweaking crates.io crate get_len_base_10_as_usize 0.1.6
[INFO] tweaked toml for crates.io crate get_len_base_10_as_usize 0.1.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cb1168c577b67dc5658dbfc860ab716618c70d16b37df693ea4ae99205d3e202
[INFO] running `Command { std: "docker" "start" "-a" "cb1168c577b67dc5658dbfc860ab716618c70d16b37df693ea4ae99205d3e202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb1168c577b67dc5658dbfc860ab716618c70d16b37df693ea4ae99205d3e202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb1168c577b67dc5658dbfc860ab716618c70d16b37df693ea4ae99205d3e202", kill_on_drop: false }`
[INFO] [stdout] cb1168c577b67dc5658dbfc860ab716618c70d16b37df693ea4ae99205d3e202
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e83837641a7ff6d4e9765a23e58bf28679b510210371b3829f3237433a9efa6e
[INFO] running `Command { std: "docker" "start" "-a" "e83837641a7ff6d4e9765a23e58bf28679b510210371b3829f3237433a9efa6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling primitive_promotion v0.1.4
[INFO] [stderr]    Compiling epui v0.1.1
[INFO] [stderr]    Compiling relative-path v1.7.0
[INFO] [stderr]    Compiling epsi v0.1.1
[INFO] [stderr]    Compiling is_signed_trait v0.1.0
[INFO] [stderr]    Compiling max_len_base_10_as_usize v0.1.0
[INFO] [stderr]    Compiling min_max_traits v0.1.0
[INFO] [stderr]    Compiling take-until v0.1.0
[INFO] [stderr]    Compiling dd_maths_traits_macros v0.1.0
[INFO] [stderr]    Compiling midpoint v0.1.5
[INFO] [stderr]    Compiling include_display_mode_tex v0.1.2
[INFO] [stderr]    Compiling get_len_base_10_as_usize_macros v0.1.9
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/include_display_mode_tex-0.1.2/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[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 `include_display_mode_tex` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e83837641a7ff6d4e9765a23e58bf28679b510210371b3829f3237433a9efa6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e83837641a7ff6d4e9765a23e58bf28679b510210371b3829f3237433a9efa6e", kill_on_drop: false }`
[INFO] [stdout] e83837641a7ff6d4e9765a23e58bf28679b510210371b3829f3237433a9efa6e