[INFO] fetching crate genco-derive 0.5.0-alpha.5...
[INFO] testing genco-derive-0.5.0-alpha.5 against 1.59.0 for beta-1.60-1
[INFO] extracting crate genco-derive 0.5.0-alpha.5 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate genco-derive 0.5.0-alpha.5 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 genco-derive 0.5.0-alpha.5
[INFO] finished tweaking crates.io crate genco-derive 0.5.0-alpha.5
[INFO] tweaked toml for crates.io crate genco-derive 0.5.0-alpha.5 written to /workspace/builds/worker-19/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] a7729673531910160d16cb37cedfb0718bf571c12998c9a5b8810ec5262548bb
[INFO] running `Command { std: "docker" "start" "-a" "a7729673531910160d16cb37cedfb0718bf571c12998c9a5b8810ec5262548bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7729673531910160d16cb37cedfb0718bf571c12998c9a5b8810ec5262548bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7729673531910160d16cb37cedfb0718bf571c12998c9a5b8810ec5262548bb", kill_on_drop: false }`
[INFO] [stdout] a7729673531910160d16cb37cedfb0718bf571c12998c9a5b8810ec5262548bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] a36960a2f7c0b5315525f62966ff4494c6bc45fbb176cbb268c1ac282244c6e0
[INFO] running `Command { std: "docker" "start" "-a" "a36960a2f7c0b5315525f62966ff4494c6bc45fbb176cbb268c1ac282244c6e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling genco-derive v0.5.0-alpha.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.50s
[INFO] running `Command { std: "docker" "inspect" "a36960a2f7c0b5315525f62966ff4494c6bc45fbb176cbb268c1ac282244c6e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a36960a2f7c0b5315525f62966ff4494c6bc45fbb176cbb268c1ac282244c6e0", kill_on_drop: false }`
[INFO] [stdout] a36960a2f7c0b5315525f62966ff4494c6bc45fbb176cbb268c1ac282244c6e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dc4f1f0538d5d62ddf3c8c187a84755b68aed45bc15eaf6e95992a70c0d372e
[INFO] running `Command { std: "docker" "start" "-a" "9dc4f1f0538d5d62ddf3c8c187a84755b68aed45bc15eaf6e95992a70c0d372e", kill_on_drop: false }`
[INFO] [stderr]    Compiling genco-derive v0.5.0-alpha.5
[INFO] [stderr]    Compiling genco v0.5.0-alpha.5
[INFO] [stdout] error: proc macro panicked
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/genco-0.5.0-alpha.5/src/lang/java/mod.rs:442:22
[INFO] [stdout]     |
[INFO] [stdout] 442 |             out.push(quote!(import #(package)#(SEP)#(name);));
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: message: failed to join spans
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/genco-0.5.0-alpha.5/src/lib.rs:165:1
[INFO] [stdout]     |
[INFO] [stdout] 165 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `genco` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "9dc4f1f0538d5d62ddf3c8c187a84755b68aed45bc15eaf6e95992a70c0d372e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dc4f1f0538d5d62ddf3c8c187a84755b68aed45bc15eaf6e95992a70c0d372e", kill_on_drop: false }`
[INFO] [stdout] 9dc4f1f0538d5d62ddf3c8c187a84755b68aed45bc15eaf6e95992a70c0d372e