[INFO] fetching crate magic-params 0.1.1...
[INFO] testing magic-params-0.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate magic-params 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate magic-params 0.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate magic-params 0.1.1
[INFO] tweaked toml for crates.io crate magic-params 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate magic-params 0.1.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate magic-params 0.1.1 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded seq-macro v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2f0bfc25caefbb4472c44c0e2ff5ed338ab568ef799111166fd755b066837c6
[INFO] running `Command { std: "docker" "start" "-a" "e2f0bfc25caefbb4472c44c0e2ff5ed338ab568ef799111166fd755b066837c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2f0bfc25caefbb4472c44c0e2ff5ed338ab568ef799111166fd755b066837c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f0bfc25caefbb4472c44c0e2ff5ed338ab568ef799111166fd755b066837c6", kill_on_drop: false }`
[INFO] [stdout] e2f0bfc25caefbb4472c44c0e2ff5ed338ab568ef799111166fd755b066837c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 714a358a4a0b0287ff757ea6195e067a803783ed1aae932ec739f8a96e33b79b
[INFO] running `Command { std: "docker" "start" "-a" "714a358a4a0b0287ff757ea6195e067a803783ed1aae932ec739f8a96e33b79b", kill_on_drop: false }`
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]    Compiling magic-params v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "714a358a4a0b0287ff757ea6195e067a803783ed1aae932ec739f8a96e33b79b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714a358a4a0b0287ff757ea6195e067a803783ed1aae932ec739f8a96e33b79b", kill_on_drop: false }`
[INFO] [stdout] 714a358a4a0b0287ff757ea6195e067a803783ed1aae932ec739f8a96e33b79b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c79a350b219e13f21bc14a4f8b6654c287382ff23918107a5ebdd1dd56da9e3c
[INFO] running `Command { std: "docker" "start" "-a" "c79a350b219e13f21bc14a4f8b6654c287382ff23918107a5ebdd1dd56da9e3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling magic-params v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/context.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(assert_matches)]
[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 `magic-params` (test "context") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c79a350b219e13f21bc14a4f8b6654c287382ff23918107a5ebdd1dd56da9e3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79a350b219e13f21bc14a4f8b6654c287382ff23918107a5ebdd1dd56da9e3c", kill_on_drop: false }`
[INFO] [stdout] c79a350b219e13f21bc14a4f8b6654c287382ff23918107a5ebdd1dd56da9e3c