[INFO] fetching crate sdb 0.0.10...
[INFO] testing sdb-0.0.10 against 1.59.0 for beta-1.60-1
[INFO] extracting crate sdb 0.0.10 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate sdb 0.0.10 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 sdb 0.0.10
[INFO] finished tweaking crates.io crate sdb 0.0.10
[INFO] tweaked toml for crates.io crate sdb 0.0.10 written to /workspace/builds/worker-28/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] [stderr] warning: the cargo feature `edition2021` has been stabilized in the 1.56 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 8daddcc0822808337f6513344e0e4c56203a057ef132d5a8795d447a450f8827
[INFO] running `Command { std: "docker" "start" "-a" "8daddcc0822808337f6513344e0e4c56203a057ef132d5a8795d447a450f8827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8daddcc0822808337f6513344e0e4c56203a057ef132d5a8795d447a450f8827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8daddcc0822808337f6513344e0e4c56203a057ef132d5a8795d447a450f8827", kill_on_drop: false }`
[INFO] [stdout] 8daddcc0822808337f6513344e0e4c56203a057ef132d5a8795d447a450f8827
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] db4163da064c5af1c38546bdb8148edcfea67473b9fe2ef29bfa5ef1b4fbe284
[INFO] running `Command { std: "docker" "start" "-a" "db4163da064c5af1c38546bdb8148edcfea67473b9fe2ef29bfa5ef1b4fbe284", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition2021` has been stabilized in the 1.56 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling sanakirja-core v1.2.16
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling sdb_macro v0.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling sanakirja v1.2.16
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling desse-derive v0.2.1
[INFO] [stderr]    Compiling desse v0.2.1
[INFO] [stderr]    Compiling sdb v0.0.10 (/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(decl_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sdb` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "db4163da064c5af1c38546bdb8148edcfea67473b9fe2ef29bfa5ef1b4fbe284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db4163da064c5af1c38546bdb8148edcfea67473b9fe2ef29bfa5ef1b4fbe284", kill_on_drop: false }`
[INFO] [stdout] db4163da064c5af1c38546bdb8148edcfea67473b9fe2ef29bfa5ef1b4fbe284