[INFO] fetching crate mech-utilities 0.1.0...
[INFO] testing mech-utilities-0.1.0 against 1.69.0 for beta-1.70-1
[INFO] extracting crate mech-utilities 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mech-utilities 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-utilities 0.1.0
[INFO] finished tweaking crates.io crate mech-utilities 0.1.0
[INFO] tweaked toml for crates.io crate mech-utilities 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mech-core v0.1.0
[INFO] [stderr]   Downloaded websocket v0.26.5
[INFO] [stderr]   Downloaded websocket-base v0.26.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 598a7dbcd94b2a4dfd1959ce5d6aaf747326d3520c8f37aac51b334d32feb045
[INFO] running `Command { std: "docker" "start" "-a" "598a7dbcd94b2a4dfd1959ce5d6aaf747326d3520c8f37aac51b334d32feb045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "598a7dbcd94b2a4dfd1959ce5d6aaf747326d3520c8f37aac51b334d32feb045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "598a7dbcd94b2a4dfd1959ce5d6aaf747326d3520c8f37aac51b334d32feb045", kill_on_drop: false }`
[INFO] [stdout] 598a7dbcd94b2a4dfd1959ce5d6aaf747326d3520c8f37aac51b334d32feb045
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0e3785adf6b29660c3d308fd914ea9489ec34b60c8dca94e66965431b0b3e2b
[INFO] running `Command { std: "docker" "start" "-a" "f0e3785adf6b29660c3d308fd914ea9489ec34b60c8dca94e66965431b0b3e2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling sha-1 v0.8.2
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling websocket-base v0.26.5
[INFO] [stderr]    Compiling websocket v0.26.5
[INFO] [stderr]    Compiling mech-core v0.1.0
[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/mech-core-0.1.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/mech-core-0.1.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/mech-core-0.1.0/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/mech-core-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mech-core` due to 5 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f0e3785adf6b29660c3d308fd914ea9489ec34b60c8dca94e66965431b0b3e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0e3785adf6b29660c3d308fd914ea9489ec34b60c8dca94e66965431b0b3e2b", kill_on_drop: false }`
[INFO] [stdout] f0e3785adf6b29660c3d308fd914ea9489ec34b60c8dca94e66965431b0b3e2b
