[INFO] fetching crate effie 0.0.1...
[INFO] testing effie-0.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate effie 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate effie 0.0.1
[INFO] finished tweaking crates.io crate effie 0.0.1
[INFO] tweaked toml for crates.io crate effie 0.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate effie 0.0.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uguid v2.2.1
[INFO] [stderr]   Downloaded effie-macros v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d7e1815978c8a3b0d0b80fa8b245c4a41a76b8a3287cbe420e14a546cfd81a9
[INFO] running `Command { std: "docker" "start" "-a" "2d7e1815978c8a3b0d0b80fa8b245c4a41a76b8a3287cbe420e14a546cfd81a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d7e1815978c8a3b0d0b80fa8b245c4a41a76b8a3287cbe420e14a546cfd81a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d7e1815978c8a3b0d0b80fa8b245c4a41a76b8a3287cbe420e14a546cfd81a9", kill_on_drop: false }`
[INFO] [stdout] 2d7e1815978c8a3b0d0b80fa8b245c4a41a76b8a3287cbe420e14a546cfd81a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09d2a61354a9982d9c7bdc7133114c4f725884b212da98f0b02bc870ee93204a
[INFO] running `Command { std: "docker" "start" "-a" "09d2a61354a9982d9c7bdc7133114c4f725884b212da98f0b02bc870ee93204a", kill_on_drop: false }`
[INFO] [stderr]    Compiling uguid v2.2.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling effie-macros v0.0.1
[INFO] [stderr]    Compiling effie v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(extended_varargs_abi_support)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(allocator_api)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(ptr_metadata)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alloc::Layout` and `size_of`
[INFO] [stdout]  --> src/protocols/file.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     alloc::Layout,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 3 |     ffi::c_void,
[INFO] [stdout] 4 |     mem::{size_of, MaybeUninit},
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alloc`, `boxed::Box`, `dealloc`, and `vec::Vec`
[INFO] [stdout]   --> src/protocols/file.rs:9:13
[INFO] [stdout]    |
[INFO] [stdout]  9 |     alloc::{alloc, dealloc},
[INFO] [stdout]    |             ^^^^^  ^^^^^^^
[INFO] [stdout] 10 |     boxed::Box,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     vec::Vec,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `null`
[INFO] [stdout]  --> src/tables/boot_services.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ptr::{null, null_mut},
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/protocols/file.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let mut len = buf.len();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `effie` (lib) due to 3 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "09d2a61354a9982d9c7bdc7133114c4f725884b212da98f0b02bc870ee93204a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09d2a61354a9982d9c7bdc7133114c4f725884b212da98f0b02bc870ee93204a", kill_on_drop: false }`
[INFO] [stdout] 09d2a61354a9982d9c7bdc7133114c4f725884b212da98f0b02bc870ee93204a