[INFO] fetching crate mantle-types 0.2.0...
[INFO] testing mantle-types-0.2.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate mantle-types 0.2.0 into /workspace/builds/worker-76/source
[INFO] validating manifest of crates.io crate mantle-types 0.2.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mantle-types 0.2.0
[INFO] finished tweaking crates.io crate mantle-types 0.2.0
[INFO] tweaked toml for crates.io crate mantle-types 0.2.0 written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e416c561e15f5ca2c516b399f6dcd44a445ad6c97f65e892e1c86affc2849c2f
[INFO] running `Command { std: "docker" "start" "-a" "e416c561e15f5ca2c516b399f6dcd44a445ad6c97f65e892e1c86affc2849c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e416c561e15f5ca2c516b399f6dcd44a445ad6c97f65e892e1c86affc2849c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e416c561e15f5ca2c516b399f6dcd44a445ad6c97f65e892e1c86affc2849c2f", kill_on_drop: false }`
[INFO] [stdout] e416c561e15f5ca2c516b399f6dcd44a445ad6c97f65e892e1c86affc2849c2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 828de601ce44cf2a6572f035ffb27faa3ebb492d40f12665a2721c6f7263bf1d
[INFO] running `Command { std: "docker" "start" "-a" "828de601ce44cf2a6572f035ffb27faa3ebb492d40f12665a2721c6f7263bf1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling oasis-types v0.3.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/oasis-types-0.3.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(non_exhaustive)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `non_exhaustive` has been stable since 1.40.0 and no longer requires an attribute to enable
[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 `oasis-types` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "828de601ce44cf2a6572f035ffb27faa3ebb492d40f12665a2721c6f7263bf1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828de601ce44cf2a6572f035ffb27faa3ebb492d40f12665a2721c6f7263bf1d", kill_on_drop: false }`
[INFO] [stdout] 828de601ce44cf2a6572f035ffb27faa3ebb492d40f12665a2721c6f7263bf1d