[INFO] fetching crate mdbook-scientific 0.5.0-beta.3...
[INFO] testing mdbook-scientific-0.5.0-beta.3 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate mdbook-scientific 0.5.0-beta.3 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate mdbook-scientific 0.5.0-beta.3
[INFO] finished tweaking crates.io crate mdbook-scientific 0.5.0-beta.3
[INFO] tweaked toml for crates.io crate mdbook-scientific 0.5.0-beta.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-scientific 0.5.0-beta.3 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 mdbook-scientific 0.5.0-beta.3 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 mdbook-boilerplate v0.1.0
[INFO] [stderr]   Downloaded nom_locate v2.1.0
[INFO] [stderr]   Downloaded nom_locate v1.0.0
[INFO] [stderr]   Downloaded opener v0.5.0
[INFO] [stderr]   Downloaded terminal_size v0.2.3
[INFO] [stderr]   Downloaded pest_generator v2.5.3
[INFO] [stderr]   Downloaded pest_derive v2.5.3
[INFO] [stderr]   Downloaded clap_complete v4.1.0
[INFO] [stderr]   Downloaded pest_meta v2.5.3
[INFO] [stderr]   Downloaded handlebars v4.3.6
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.2
[INFO] [stderr]   Downloaded nom-tracable v0.5.2
[INFO] [stderr]   Downloaded nom-bibtex v0.3.0
[INFO] [stderr]   Downloaded object v0.30.2
[INFO] [stderr]   Downloaded nom-tracable-macros v0.5.2
[INFO] [stderr]   Downloaded gimli v0.27.0
[INFO] [stderr]   Downloaded mdbook v0.4.25
[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] dcd618bfe24650f71a5d28db5f3bbc56f7add065f65bb4761d2bad8f66ace992
[INFO] running `Command { std: "docker" "start" "-a" "dcd618bfe24650f71a5d28db5f3bbc56f7add065f65bb4761d2bad8f66ace992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcd618bfe24650f71a5d28db5f3bbc56f7add065f65bb4761d2bad8f66ace992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcd618bfe24650f71a5d28db5f3bbc56f7add065f65bb4761d2bad8f66ace992", kill_on_drop: false }`
[INFO] [stdout] dcd618bfe24650f71a5d28db5f3bbc56f7add065f65bb4761d2bad8f66ace992
[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] 87da1ee961a56c01b567a24c2bced1ed01478692c3129b8c5738abdd0d6a0be2
[INFO] running `Command { std: "docker" "start" "-a" "87da1ee961a56c01b567a24c2bced1ed01478692c3129b8c5738abdd0d6a0be2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling ryu v1.0.12
[INFO] [stderr]    Compiling io-lifetimes v1.0.4
[INFO] [stderr]    Compiling rustix v0.36.6
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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 thread_local v1.1.4
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling pulldown-cmark v0.9.2
[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" "87da1ee961a56c01b567a24c2bced1ed01478692c3129b8c5738abdd0d6a0be2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87da1ee961a56c01b567a24c2bced1ed01478692c3129b8c5738abdd0d6a0be2", kill_on_drop: false }`
[INFO] [stdout] 87da1ee961a56c01b567a24c2bced1ed01478692c3129b8c5738abdd0d6a0be2