[INFO] fetching crate og-enum-to-string 0.1.0...
[INFO] checking og-enum-to-string-0.1.0 against 1.95.0 for pr-155915
[INFO] extracting crate og-enum-to-string 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate og-enum-to-string 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate og-enum-to-string 0.1.0
[INFO] tweaked toml for crates.io crate og-enum-to-string 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate og-enum-to-string 0.1.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate og-enum-to-string 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.39
[INFO] [stderr]   Downloaded enum-to-string-macros v0.1.0
[INFO] [stderr]   Downloaded enum-to-string-traits v0.1.0
[INFO] [stderr]   Downloaded syn v2.0.99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a14e7743e53d95dc239fe35d45e2333ab2343ec4292b26a3257fb03f6c3c245b
[INFO] running `Command { std: "docker" "start" "-a" "a14e7743e53d95dc239fe35d45e2333ab2343ec4292b26a3257fb03f6c3c245b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a14e7743e53d95dc239fe35d45e2333ab2343ec4292b26a3257fb03f6c3c245b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14e7743e53d95dc239fe35d45e2333ab2343ec4292b26a3257fb03f6c3c245b", kill_on_drop: false }`
[INFO] [stdout] a14e7743e53d95dc239fe35d45e2333ab2343ec4292b26a3257fb03f6c3c245b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 515f4dc62e47548710803937a580069a8f10dea04b2316b8f49b83e7f0ae7437
[INFO] running `Command { std: "docker" "start" "-a" "515f4dc62e47548710803937a580069a8f10dea04b2316b8f49b83e7f0ae7437", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]     Checking enum-to-string-traits v0.1.0
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]    Compiling enum-to-string-macros v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/enum-to-string-macros-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enum-to-string-macros` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "515f4dc62e47548710803937a580069a8f10dea04b2316b8f49b83e7f0ae7437", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "515f4dc62e47548710803937a580069a8f10dea04b2316b8f49b83e7f0ae7437", kill_on_drop: false }`
[INFO] [stdout] 515f4dc62e47548710803937a580069a8f10dea04b2316b8f49b83e7f0ae7437