[INFO] fetching crate wood 0.5.0...
[INFO] checking wood-0.5.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate wood 0.5.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate wood 0.5.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wood 0.5.0
[INFO] finished tweaking crates.io crate wood 0.5.0
[INFO] tweaked toml for crates.io crate wood 0.5.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate wood 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf6541c50559a2fab9197dd878f4b1f9ddff05b6ec11e93018b2ddfc349f3f01
[INFO] running `Command { std: "docker" "start" "-a" "bf6541c50559a2fab9197dd878f4b1f9ddff05b6ec11e93018b2ddfc349f3f01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf6541c50559a2fab9197dd878f4b1f9ddff05b6ec11e93018b2ddfc349f3f01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf6541c50559a2fab9197dd878f4b1f9ddff05b6ec11e93018b2ddfc349f3f01", kill_on_drop: false }`
[INFO] [stdout] bf6541c50559a2fab9197dd878f4b1f9ddff05b6ec11e93018b2ddfc349f3f01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30d476bfb960c3f824505369a0220133bbb8a0815e065ccaf965200044a4070e
[INFO] running `Command { std: "docker" "start" "-a" "30d476bfb960c3f824505369a0220133bbb8a0815e065ccaf965200044a4070e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking ref_slice v1.1.1
[INFO] [stderr]     Checking wood v0.5.0 (/opt/rustwide/workdir)
[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(test)]
[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(drain_filter)]
[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(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/lib.rs:240:1
[INFO] [stdout]     |
[INFO] [stdout] 240 | / macro_rules! wood_assert {
[INFO] [stdout] 241 | |     ($term:expr, $condition:expr, $message:expr) => {
[INFO] [stdout] 242 | |         if !$condition {
[INFO] [stdout] 243 | |             let (l, c) = ($term).line_and_col();
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |     };
[INFO] [stdout] 253 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:286:15
[INFO] [stdout]     |
[INFO] [stdout] 286 |     fn dewoodify(&Wood) -> Result<Self, Box<WoodError>> where Self:Sized;
[INFO] [stdout]     |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Wood`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/lib.rs:240:1
[INFO] [stdout]     |
[INFO] [stdout] 240 | / macro_rules! wood_assert {
[INFO] [stdout] 241 | |     ($term:expr, $condition:expr, $message:expr) => {
[INFO] [stdout] 242 | |         if !$condition {
[INFO] [stdout] 243 | |             let (l, c) = ($term).line_and_col();
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |     };
[INFO] [stdout] 253 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/lib.rs:286:15
[INFO] [stdout]     |
[INFO] [stdout] 286 |     fn dewoodify(&Wood) -> Result<Self, Box<WoodError>> where Self:Sized;
[INFO] [stdout]     |                  ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Wood`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wood` due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "30d476bfb960c3f824505369a0220133bbb8a0815e065ccaf965200044a4070e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30d476bfb960c3f824505369a0220133bbb8a0815e065ccaf965200044a4070e", kill_on_drop: false }`
[INFO] [stdout] 30d476bfb960c3f824505369a0220133bbb8a0815e065ccaf965200044a4070e
