[INFO] fetching crate elfsign 0.0.2...
[INFO] testing elfsign-0.0.2 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate elfsign 0.0.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate elfsign 0.0.2
[INFO] finished tweaking crates.io crate elfsign 0.0.2
[INFO] tweaked toml for crates.io crate elfsign 0.0.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate elfsign 0.0.2 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 elfsign 0.0.2 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 pem v1.1.0
[INFO] [stderr]   Downloaded xsalsa20poly1305 v0.9.0
[INFO] [stderr]   Downloaded zeroize_derive v1.3.3
[INFO] [stderr]   Downloaded snafu-derive v0.7.4
[INFO] [stderr]   Downloaded serde_bytes v0.11.8
[INFO] [stderr]   Downloaded picky-asn1 v0.5.0
[INFO] [stderr]   Downloaded dyn-clone v1.0.10
[INFO] [stderr]   Downloaded async_once v0.2.6
[INFO] [stderr]   Downloaded primeorder v0.12.0
[INFO] [stderr]   Downloaded signature v2.0.0
[INFO] [stderr]   Downloaded async-trait v0.1.61
[INFO] [stderr]   Downloaded ahash v0.8.2
[INFO] [stderr]   Downloaded oci-distribution v0.9.4
[INFO] [stderr]   Downloaded hashbrown v0.13.1
[INFO] [stderr]   Downloaded libm v0.2.6
[INFO] [stderr]   Downloaded sigstore v0.6.0
[INFO] [stderr]   Downloaded wasmparser v0.57.0
[INFO] [stderr]   Downloaded oauth2 v4.3.0
[INFO] [stderr]   Downloaded openidconnect v2.4.0
[INFO] [stderr]   Downloaded picky v7.0.0-rc.3
[INFO] [stderr]   Downloaded picky-asn1-x509 v0.8.0
[INFO] [stderr]   Downloaded p384 v0.11.2
[INFO] [stderr]   Downloaded object v0.30.1
[INFO] [stderr]   Downloaded p384 v0.12.0
[INFO] [stderr]   Downloaded rsa v0.7.2
[INFO] [stderr]   Downloaded bstr v1.1.0
[INFO] [stderr]   Downloaded tough v0.12.5
[INFO] [stderr]   Downloaded picky-asn1-der v0.3.1
[INFO] [stderr]   Downloaded pkcs5 v0.5.0
[INFO] [stderr]   Downloaded const-oid v0.9.1
[INFO] [stderr]   Downloaded nom v7.1.2
[INFO] [stderr]   Downloaded p256 v0.12.0
[INFO] [stderr]   Downloaded ecdsa v0.15.0
[INFO] [stderr]   Downloaded cached v0.40.0
[INFO] [stderr]   Downloaded http-auth v0.1.7
[INFO] [stderr]   Downloaded open v3.2.0
[INFO] [stderr]   Downloaded picky-asn1 v0.6.0
[INFO] [stderr]   Downloaded oid v0.2.1
[INFO] [stderr]   Downloaded path-dedot v3.0.18
[INFO] [stderr]   Downloaded snafu v0.7.4
[INFO] [stderr]   Downloaded cached_proc_macro v0.15.0
[INFO] [stderr]   Downloaded serde_path_to_error v0.1.9
[INFO] [stderr]   Downloaded olpc-cjson v0.1.2
[INFO] [stderr]   Downloaded path-absolutize v3.0.14
[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] 455adff164f3bfb6f67e68b5c2c511db734fd54fb585eb805464f3f18702499e
[INFO] running `Command { std: "docker" "start" "-a" "455adff164f3bfb6f67e68b5c2c511db734fd54fb585eb805464f3f18702499e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "455adff164f3bfb6f67e68b5c2c511db734fd54fb585eb805464f3f18702499e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455adff164f3bfb6f67e68b5c2c511db734fd54fb585eb805464f3f18702499e", kill_on_drop: false }`
[INFO] [stdout] 455adff164f3bfb6f67e68b5c2c511db734fd54fb585eb805464f3f18702499e
[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] 161d9bae56e4fa321e03ab06b32460dced978ab783592a2325ebe47635bfbaf2
[INFO] running `Command { std: "docker" "start" "-a" "161d9bae56e4fa321e03ab06b32460dced978ab783592a2325ebe47635bfbaf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling const-oid v0.9.1
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling base64ct v1.5.3
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/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 num-traits v0.2.15
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling itoa v1.0.5
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling cc v1.0.78
[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" "161d9bae56e4fa321e03ab06b32460dced978ab783592a2325ebe47635bfbaf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "161d9bae56e4fa321e03ab06b32460dced978ab783592a2325ebe47635bfbaf2", kill_on_drop: false }`
[INFO] [stdout] 161d9bae56e4fa321e03ab06b32460dced978ab783592a2325ebe47635bfbaf2