[INFO] fetching crate mml-cli 1.0.0...
[INFO] testing mml-cli-1.0.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate mml-cli 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate mml-cli 1.0.0
[INFO] finished tweaking crates.io crate mml-cli 1.0.0
[INFO] tweaked toml for crates.io crate mml-cli 1.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mml-cli 1.0.0 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 mml-cli 1.0.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded z-base-32 v0.1.2
[INFO] [stderr]   Downloaded keyring-lib v0.1.0
[INFO] [stderr]   Downloaded shellexpand-utils v0.1.0
[INFO] [stderr]   Downloaded process-lib v0.1.0
[INFO] [stderr]   Downloaded pgp-lib v0.1.0
[INFO] [stderr]   Downloaded linux-keyutils v0.2.3
[INFO] [stderr]   Downloaded signature v2.1.0
[INFO] [stderr]   Downloaded libgpg-error-sys v0.6.0
[INFO] [stderr]   Downloaded cstr-argument v0.1.2
[INFO] [stderr]   Downloaded md-5 v0.10.5
[INFO] [stderr]   Downloaded ariadne v0.3.0
[INFO] [stderr]   Downloaded gpg-error v0.6.0
[INFO] [stderr]   Downloaded elliptic-curve v0.13.5
[INFO] [stderr]   Downloaded ed25519-dalek v2.0.0
[INFO] [stderr]   Downloaded gpgme v0.11.0
[INFO] [stderr]   Downloaded der v0.7.8
[INFO] [stderr]   Downloaded crypto-bigint v0.5.2
[INFO] [stderr]   Downloaded rsa v0.9.2
[INFO] [stderr]   Downloaded chumsky v1.0.0-alpha.4
[INFO] [stderr]   Downloaded primeorder v0.13.2
[INFO] [stderr]   Downloaded const-oid v0.9.5
[INFO] [stderr]   Downloaded cfg-expr v0.15.4
[INFO] [stderr]   Downloaded gpgme-sys v0.11.0
[INFO] [stderr]   Downloaded mail-builder v0.3.0
[INFO] [stderr]   Downloaded rustls v0.21.6
[INFO] [stderr]   Downloaded hyper-rustls v0.24.1
[INFO] [stderr]   Downloaded buffer-redux v1.0.0
[INFO] [stderr]   Downloaded ed25519 v2.2.2
[INFO] [stderr]   Downloaded num-derive v0.4.0
[INFO] [stderr]   Downloaded ecdsa v0.16.8
[INFO] [stderr]   Downloaded clap_mangen v0.2.10
[INFO] [stderr]   Downloaded build-rs v0.1.2
[INFO] [stderr]   Downloaded system-deps v6.1.1
[INFO] [stderr]   Downloaded nanohtml2text v0.1.4
[INFO] [stderr]   Downloaded fiat-crypto v0.1.20
[INFO] [stderr]   Downloaded mail-parser v0.8.2
[INFO] [stderr]   Downloaded async-recursion v1.0.4
[INFO] [stderr]   Downloaded bitfield v0.14.0
[INFO] [stderr]   Downloaded spki v0.7.2
[INFO] [stderr]   Downloaded crc24 v0.1.6
[INFO] [stderr]   Downloaded secret-lib v0.1.0
[INFO] [stderr]   Downloaded mml-lib v1.0.0
[INFO] [stderr]   Downloaded keyring v2.0.5
[INFO] [stderr]   Downloaded pgp v0.10.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 510f428456b6bee78ca9c3c978f93f1a47c72ec084bc8e8016db068b10682b6f
[INFO] running `Command { std: "docker" "start" "-a" "510f428456b6bee78ca9c3c978f93f1a47c72ec084bc8e8016db068b10682b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "510f428456b6bee78ca9c3c978f93f1a47c72ec084bc8e8016db068b10682b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "510f428456b6bee78ca9c3c978f93f1a47c72ec084bc8e8016db068b10682b6f", kill_on_drop: false }`
[INFO] [stdout] 510f428456b6bee78ca9c3c978f93f1a47c72ec084bc8e8016db068b10682b6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] cb8b3dc1e46f8feef320816a206bc34452dea8bc7c00c2fed5959d41be8ee51e
[INFO] running `Command { std: "docker" "start" "-a" "cb8b3dc1e46f8feef320816a206bc34452dea8bc7c00c2fed5959d41be8ee51e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling rustix v0.37.6
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling linux-raw-sys v0.3.1
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.1
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[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" "cb8b3dc1e46f8feef320816a206bc34452dea8bc7c00c2fed5959d41be8ee51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb8b3dc1e46f8feef320816a206bc34452dea8bc7c00c2fed5959d41be8ee51e", kill_on_drop: false }`
[INFO] [stdout] cb8b3dc1e46f8feef320816a206bc34452dea8bc7c00c2fed5959d41be8ee51e