[INFO] fetching crate casperlabs-mint 0.4.1...
[INFO] testing casperlabs-mint-0.4.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate casperlabs-mint 0.4.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate casperlabs-mint 0.4.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate casperlabs-mint 0.4.1
[INFO] finished tweaking crates.io crate casperlabs-mint 0.4.1
[INFO] tweaked toml for crates.io crate casperlabs-mint 0.4.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75b2696887fdc5b0f17044e856e6fb0ce892e78f7583d1b32cdd20a284d7acf1
[INFO] running `Command { std: "docker" "start" "-a" "75b2696887fdc5b0f17044e856e6fb0ce892e78f7583d1b32cdd20a284d7acf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75b2696887fdc5b0f17044e856e6fb0ce892e78f7583d1b32cdd20a284d7acf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75b2696887fdc5b0f17044e856e6fb0ce892e78f7583d1b32cdd20a284d7acf1", kill_on_drop: false }`
[INFO] [stdout] 75b2696887fdc5b0f17044e856e6fb0ce892e78f7583d1b32cdd20a284d7acf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0ac4a6468b61815f847d2e948e2d7b62cf1f2fcfbf5d3b7b31944151bc0db51
[INFO] running `Command { std: "docker" "start" "-a" "f0ac4a6468b61815f847d2e948e2d7b62cf1f2fcfbf5d3b7b31944151bc0db51", kill_on_drop: false }`
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling base16 v0.2.1
[INFO] [stderr]    Compiling hex_fmt v0.3.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling blake2 v0.8.1
[INFO] [stderr]    Compiling uint v0.8.5
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling casperlabs-types v0.6.1
[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/casperlabs-types-0.6.1/src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     feature(min_specialization, try_reserve)
[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 `casperlabs-types` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f0ac4a6468b61815f847d2e948e2d7b62cf1f2fcfbf5d3b7b31944151bc0db51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0ac4a6468b61815f847d2e948e2d7b62cf1f2fcfbf5d3b7b31944151bc0db51", kill_on_drop: false }`
[INFO] [stdout] f0ac4a6468b61815f847d2e948e2d7b62cf1f2fcfbf5d3b7b31944151bc0db51