[INFO] fetching crate postform_serial 0.5.0...
[INFO] testing postform_serial-0.5.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate postform_serial 0.5.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate postform_serial 0.5.0
[INFO] finished tweaking crates.io crate postform_serial 0.5.0
[INFO] tweaked toml for crates.io crate postform_serial 0.5.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate postform_serial 0.5.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate postform_serial 0.5.0 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | homepage = "https://github.com/Javier-varez/Postform"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 35 | repository = "https://github.com/Javier-varez/Postform"
[INFO] [stderr]    |              ------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `postform_serial` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd
[INFO] running `Command { std: "docker" "start" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | homepage = "https://github.com/Javier-varez/Postform"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 35 | repository = "https://github.com/Javier-varez/Postform"
[INFO] [stderr]    |              ------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `postform_serial` (manifest) generated 1 warning
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling tracing-core v0.1.23
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling clang-sys v1.3.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling eyre v0.6.7
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling wasmparser v0.57.0
[INFO] [stderr]    Compiling owo-colors v1.3.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling libudev v0.2.0
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.100.0-beta.1-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.89/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=ed1c1b36c4b40202 -C extra-filename=-7b6390628ea1a326 --out-dir /opt/rustwide/target/release/build/syn/7b6390628ea1a326/out -C strip=debuginfo -L dependency=/opt/rustwide/target/release/build/proc-macro2/0c33e28ac217b604/out -L dependency=/opt/rustwide/target/release/build/unicode-xid/38b4f790ad47c60a/out --extern proc_macro2=/opt/rustwide/target/release/build/proc-macro2/0c33e28ac217b604/out/libproc_macro2-0c33e28ac217b604.rmeta --extern quote=/opt/rustwide/target/release/build/quote/c269deca114a2ae7/out/libquote-c269deca114a2ae7.rmeta --extern unicode_xid=/opt/rustwide/target/release/build/unicode-xid/38b4f790ad47c60a/out/libunicode_xid-38b4f790ad47c60a.rmeta --cap-lints allow --cap-lints=warn --force-warn=unused_crate_dependencies --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd", kill_on_drop: false }`
[INFO] [stdout] a6e47585e228c4afb2b005e05f232452f6a43f39a5f6563a55cc0d1294a4fdfd