[INFO] fetching crate amt-macros 0.2.1...
[INFO] testing amt-macros-0.2.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate amt-macros 0.2.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate amt-macros 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate amt-macros 0.2.1
[INFO] tweaked toml for crates.io crate amt-macros 0.2.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate amt-macros 0.2.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate amt-macros 0.2.1 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19d37591e9aa3bf4b2b171c4ed038f9f0cf906e0c90433b182ef879f0bdf29d4
[INFO] running `Command { std: "docker" "start" "-a" "19d37591e9aa3bf4b2b171c4ed038f9f0cf906e0c90433b182ef879f0bdf29d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19d37591e9aa3bf4b2b171c4ed038f9f0cf906e0c90433b182ef879f0bdf29d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19d37591e9aa3bf4b2b171c4ed038f9f0cf906e0c90433b182ef879f0bdf29d4", kill_on_drop: false }`
[INFO] [stdout] 19d37591e9aa3bf4b2b171c4ed038f9f0cf906e0c90433b182ef879f0bdf29d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acd13af7ea2ea65a80d057d8f2682f5458848f315d946a01cc61f141529d862e
[INFO] running `Command { std: "docker" "start" "-a" "acd13af7ea2ea65a80d057d8f2682f5458848f315d946a01cc61f141529d862e", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.94
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling amt-macros v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `cfg_match`
[INFO] [stdout]   --> src/lib.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(cfg_match)]
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amt-macros` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "acd13af7ea2ea65a80d057d8f2682f5458848f315d946a01cc61f141529d862e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acd13af7ea2ea65a80d057d8f2682f5458848f315d946a01cc61f141529d862e", kill_on_drop: false }`
[INFO] [stdout] acd13af7ea2ea65a80d057d8f2682f5458848f315d946a01cc61f141529d862e