[INFO] fetching crate mech-program 0.1.0...
[INFO] testing mech-program-0.1.0 against 1.69.0 for beta-1.70-1
[INFO] extracting crate mech-program 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mech-program 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-program 0.1.0
[INFO] finished tweaking crates.io crate mech-program 0.1.0
[INFO] tweaked toml for crates.io crate mech-program 0.1.0 written to /workspace/builds/worker-2-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-utilities v0.1.0
[INFO] [stderr]   Downloaded mech-core v0.1.0
[INFO] [stderr]   Downloaded websocket-base v0.26.5
[INFO] [stderr]   Downloaded websocket v0.26.5
[INFO] [stderr]   Downloaded nom-unicode v0.3.0
[INFO] [stderr]   Downloaded mech-syntax v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6963e5c6386565574a72654d7bc977ad61ffae8fafa8c4d02d3f8c9fe09ac38c
[INFO] running `Command { std: "docker" "start" "-a" "6963e5c6386565574a72654d7bc977ad61ffae8fafa8c4d02d3f8c9fe09ac38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6963e5c6386565574a72654d7bc977ad61ffae8fafa8c4d02d3f8c9fe09ac38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6963e5c6386565574a72654d7bc977ad61ffae8fafa8c4d02d3f8c9fe09ac38c", kill_on_drop: false }`
[INFO] [stdout] 6963e5c6386565574a72654d7bc977ad61ffae8fafa8c4d02d3f8c9fe09ac38c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 543cf0ce9a49697982c31f14ab26295f7b64012daa107ac4c3cad5eb3b6c6d70
[INFO] running `Command { std: "docker" "start" "-a" "543cf0ce9a49697982c31f14ab26295f7b64012daa107ac4c3cad5eb3b6c6d70", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
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[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
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[INFO] [stderr]    Compiling parking_lot_core v0.6.3
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[INFO] [stderr]    Compiling failure_derive v0.1.8
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[INFO] [stderr]    Compiling synstructure v0.12.6
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[INFO] [stderr]    Compiling addr2line v0.19.0
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[INFO] [stderr]    Compiling object v0.30.3
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[INFO] [stderr]    Compiling tokio-buf v0.1.1
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[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
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[INFO] [stderr]    Compiling base64 v0.9.3
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[INFO] [stderr]    Compiling mime v0.2.6
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[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling mime_guess v2.0.4
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[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling publicsuffix v1.5.6
[INFO] [stderr]    Compiling websocket-base v0.26.5
[INFO] [stderr]    Compiling mech-core v0.1.0
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling try_from v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling serde_urlencoded v0.5.5
[INFO] [stderr]    Compiling flate2 v1.0.26
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling nom-unicode v0.3.0
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling websocket v0.26.5
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling encoding_rs v0.8.32
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[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] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling reqwest v0.9.24
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mech-core` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "543cf0ce9a49697982c31f14ab26295f7b64012daa107ac4c3cad5eb3b6c6d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "543cf0ce9a49697982c31f14ab26295f7b64012daa107ac4c3cad5eb3b6c6d70", kill_on_drop: false }`
[INFO] [stdout] 543cf0ce9a49697982c31f14ab26295f7b64012daa107ac4c3cad5eb3b6c6d70
