[INFO] fetching crate mogglo-python 0.1.1...
[INFO] testing mogglo-python-0.1.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate mogglo-python 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate mogglo-python 0.1.1
[INFO] finished tweaking crates.io crate mogglo-python 0.1.1
[INFO] tweaked toml for crates.io crate mogglo-python 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mogglo-python 0.1.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mogglo-python 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tree-sitter-edit v0.1.2
[INFO] [stderr]   Downloaded ariadne v0.2.0
[INFO] [stderr]   Downloaded mogglo v0.1.1
[INFO] [stderr]   Downloaded tree-sitter-python v0.20.2
[INFO] [stderr]   Downloaded rlua v0.19.4
[INFO] [stderr]   Downloaded rlua-lua51-sys v0.1.3
[INFO] [stderr]   Downloaded tree-sitter v0.20.9
[INFO] [stderr]   Downloaded rlua-lua53-sys v0.1.3
[INFO] [stderr]   Downloaded rlua-lua54-sys v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05bda0145553cb7e8d419bed765f7a3bdfd5925a32ec00f618055e93956cea33
[INFO] running `Command { std: "docker" "start" "-a" "05bda0145553cb7e8d419bed765f7a3bdfd5925a32ec00f618055e93956cea33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05bda0145553cb7e8d419bed765f7a3bdfd5925a32ec00f618055e93956cea33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05bda0145553cb7e8d419bed765f7a3bdfd5925a32ec00f618055e93956cea33", kill_on_drop: false }`
[INFO] [stdout] 05bda0145553cb7e8d419bed765f7a3bdfd5925a32ec00f618055e93956cea33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 86b4534787e9a8c8ffa279b8d41e0da42d5d462f2ae73165882c9b1c78fceae1
[INFO] running `Command { std: "docker" "start" "-a" "86b4534787e9a8c8ffa279b8d41e0da42d5d462f2ae73165882c9b1c78fceae1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling rustix v0.36.11
[INFO] [stderr]    Compiling linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling anstyle v0.3.5
[INFO] [stderr]    Compiling anstyle-parse v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling concolor-query v0.3.3
[INFO] [stderr]    Compiling concolor-override v1.0.0
[INFO] [stderr]    Compiling rlua v0.19.4
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling ariadne v0.2.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.53/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[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 `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "86b4534787e9a8c8ffa279b8d41e0da42d5d462f2ae73165882c9b1c78fceae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86b4534787e9a8c8ffa279b8d41e0da42d5d462f2ae73165882c9b1c78fceae1", kill_on_drop: false }`
[INFO] [stdout] 86b4534787e9a8c8ffa279b8d41e0da42d5d462f2ae73165882c9b1c78fceae1