[INFO] crate yaiouom 0.1.3 is already in cache
[INFO] testing yaiouom-0.1.3 against 1.45.2 for beta-1.46-1
[INFO] extracting crate yaiouom 0.1.3 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate yaiouom 0.1.3 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yaiouom 0.1.3
[INFO] finished tweaking crates.io crate yaiouom 0.1.3
[INFO] tweaked toml for crates.io crate yaiouom 0.1.3 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "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] cf1756db2b568fc9d044c7dd052a7c63add39d16c65ee934a8582ea96f0f79e6
[INFO] running `Command { std: "docker" "start" "-a" "cf1756db2b568fc9d044c7dd052a7c63add39d16c65ee934a8582ea96f0f79e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf1756db2b568fc9d044c7dd052a7c63add39d16c65ee934a8582ea96f0f79e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf1756db2b568fc9d044c7dd052a7c63add39d16c65ee934a8582ea96f0f79e6", kill_on_drop: false }`
[INFO] [stdout] cf1756db2b568fc9d044c7dd052a7c63add39d16c65ee934a8582ea96f0f79e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "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] 140d33ef895c1db983b6535a03fb13790b0eab164ddc9669ead27f2fc38ce871
[INFO] running `Command { std: "docker" "start" "-a" "140d33ef895c1db983b6535a03fb13790b0eab164ddc9669ead27f2fc38ce871", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling yaiouom v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> src/unit.rs:65:3
[INFO] [stdout]    |
[INFO] [stdout] 65 | #[rustc_yaiouom_check_unify_measure]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]    --> src/unit.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 |     #[rustc_yaiouom_check_unify]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]    --> src/unit.rs:518:3
[INFO] [stdout]     |
[INFO] [stdout] 518 | #[rustc_yaiouom_combinator_dimensionless]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]    --> src/unit.rs:548:3
[INFO] [stdout]     |
[INFO] [stdout] 548 | #[rustc_yaiouom_combinator_mul]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]    --> src/unit.rs:569:3
[INFO] [stdout]     |
[INFO] [stdout] 569 | #[rustc_yaiouom_combinator_inv]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_yaiouom_check_unify_measure` in this scope
[INFO] [stdout]   --> src/unit.rs:65:3
[INFO] [stdout]    |
[INFO] [stdout] 65 | #[rustc_yaiouom_check_unify_measure]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_yaiouom_check_unify` in this scope
[INFO] [stdout]    --> src/unit.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 |     #[rustc_yaiouom_check_unify]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_yaiouom_combinator_dimensionless` in this scope
[INFO] [stdout]    --> src/unit.rs:518:3
[INFO] [stdout]     |
[INFO] [stdout] 518 | #[rustc_yaiouom_combinator_dimensionless]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_yaiouom_combinator_mul` in this scope
[INFO] [stdout]    --> src/unit.rs:548:3
[INFO] [stdout]     |
[INFO] [stdout] 548 | #[rustc_yaiouom_combinator_mul]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_yaiouom_combinator_inv` in this scope
[INFO] [stdout]    --> src/unit.rs:569:3
[INFO] [stdout]     |
[INFO] [stdout] 569 | #[rustc_yaiouom_combinator_inv]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rustc_attrs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 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 `yaiouom`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "140d33ef895c1db983b6535a03fb13790b0eab164ddc9669ead27f2fc38ce871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "140d33ef895c1db983b6535a03fb13790b0eab164ddc9669ead27f2fc38ce871", kill_on_drop: false }`
[INFO] [stdout] 140d33ef895c1db983b6535a03fb13790b0eab164ddc9669ead27f2fc38ce871