[INFO] fetching crate bitrange_plugin 0.1.2...
[INFO] testing bitrange_plugin-0.1.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate bitrange_plugin 0.1.2 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate bitrange_plugin 0.1.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitrange_plugin 0.1.2
[INFO] finished tweaking crates.io crate bitrange_plugin 0.1.2
[INFO] tweaked toml for crates.io crate bitrange_plugin 0.1.2 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32e4fa14ca1c907301373ce355554d12ece1e5a3c0aa80f26ce2d678aa7a275b
[INFO] running `Command { std: "docker" "start" "-a" "32e4fa14ca1c907301373ce355554d12ece1e5a3c0aa80f26ce2d678aa7a275b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32e4fa14ca1c907301373ce355554d12ece1e5a3c0aa80f26ce2d678aa7a275b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32e4fa14ca1c907301373ce355554d12ece1e5a3c0aa80f26ce2d678aa7a275b", kill_on_drop: false }`
[INFO] [stdout] 32e4fa14ca1c907301373ce355554d12ece1e5a3c0aa80f26ce2d678aa7a275b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e186df9dd31b6ac6b34ea4cde22dde986e9e69ab79d281e6bbd241df97c012a
[INFO] running `Command { std: "docker" "start" "-a" "2e186df9dd31b6ac6b34ea4cde22dde986e9e69ab79d281e6bbd241df97c012a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bitrange_plugin v0.1.2 (/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(proc_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `Term` found for enum `proc_macro::TokenTree` in the current scope
[INFO] [stdout]   --> src/pattern.rs:60:37
[INFO] [stdout]    |
[INFO] [stdout] 60 |                     Some(TokenTree::Term(term)) => {
[INFO] [stdout]    |                                     ^^^^ variant or associated item not found in `proc_macro::TokenTree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `Op` found for enum `proc_macro::TokenTree` in the current scope
[INFO] [stdout]   --> src/pattern.rs:85:28
[INFO] [stdout]    |
[INFO] [stdout] 85 |     if let Some(TokenTree::Op(op)) = item {
[INFO] [stdout]    |                            ^^ variant or associated item not found in `proc_macro::TokenTree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `Term` found for enum `proc_macro::TokenTree` in the current scope
[INFO] [stdout]   --> src/pattern.rs:97:28
[INFO] [stdout]    |
[INFO] [stdout] 97 |     if let Some(TokenTree::Term(term)) = item {
[INFO] [stdout]    |                            ^^^^ variant or associated item not found in `proc_macro::TokenTree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bitrange_plugin` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "2e186df9dd31b6ac6b34ea4cde22dde986e9e69ab79d281e6bbd241df97c012a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e186df9dd31b6ac6b34ea4cde22dde986e9e69ab79d281e6bbd241df97c012a", kill_on_drop: false }`
[INFO] [stdout] 2e186df9dd31b6ac6b34ea4cde22dde986e9e69ab79d281e6bbd241df97c012a