[INFO] cloning repository https://github.com/mhfan/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhfan/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhfan%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhfan%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71feb404f1342ad8f11c65322f4a9f7dca72a9c2
[INFO] documenting mhfan/hello-rust against nightly for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhfan%2Fhello-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mhfan/hello-rust on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mhfan/hello-rust
[INFO] finished tweaking git repo https://github.com/mhfan/hello-rust
[INFO] tweaked toml for git repo https://github.com/mhfan/hello-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mhfan/hello-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/AlephAlpha/build-time`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sycamore-web v0.8.2
[INFO] [stderr]   Downloaded sycamore-core v0.8.2
[INFO] [stderr]   Downloaded rexie v0.2.1
[INFO] [stderr]   Downloaded sycamore-reactive v0.8.1
[INFO] [stderr]   Downloaded sycamore-macro v0.8.2
[INFO] [stderr]   Downloaded perseus-warp v0.4.0-beta.11
[INFO] [stderr]   Downloaded fmterr v0.1.1
[INFO] [stderr]   Downloaded css-minify v0.2.2
[INFO] [stderr]   Downloaded derive_arbitrary v1.2.0
[INFO] [stderr]   Downloaded perseus v0.4.0-beta.11
[INFO] [stderr]   Downloaded sycamore-futures v0.8.0
[INFO] [stderr]   Downloaded parse-js v0.3.1
[INFO] [stderr]   Downloaded minify-js v0.2.9
[INFO] [stderr]   Downloaded minify-html-onepass v0.10.3
[INFO] [stderr]   Downloaded perseus-macro v0.4.0-beta.11
[INFO] [stderr]   Downloaded dioxus-router v0.2.3
[INFO] [stderr]   Downloaded sycamore v0.8.2
[INFO] [stderr]   Downloaded dioxus-web v0.2.1
[INFO] [stderr]   Downloaded sycamore-router v0.8.0
[INFO] [stderr]   Downloaded warp-fix-171 v0.3.2
[INFO] [stderr]   Downloaded sycamore-router-macro v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 136372d50b7cd720095c875122f4cb82ee8dca89885cd15eb0f356e142f95521
[INFO] running `Command { std: "docker" "start" "-a" "136372d50b7cd720095c875122f4cb82ee8dca89885cd15eb0f356e142f95521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "136372d50b7cd720095c875122f4cb82ee8dca89885cd15eb0f356e142f95521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "136372d50b7cd720095c875122f4cb82ee8dca89885cd15eb0f356e142f95521", kill_on_drop: false }`
[INFO] [stdout] 136372d50b7cd720095c875122f4cb82ee8dca89885cd15eb0f356e142f95521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7da51812cfdfe674652dff57dd8acaae87a9f8bbe8ddb517b47b4b8aeadc6079
[INFO] running `Command { std: "docker" "start" "-a" "7da51812cfdfe674652dff57dd8acaae87a9f8bbe8ddb517b47b4b8aeadc6079", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling ahash v0.8.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.53
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]    Compiling chrono v0.4.22
[INFO] [stderr]    Compiling inrust v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: c++: error: unrecognized command line option '-std=c++20'; did you mean '-std=c++2a'?
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `inrust v0.3.4 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/inrust-26e7d65483bd24f0/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=src/calc24.cpp
[INFO] [stderr]   TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr]   HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr]   CXX_x86_64-unknown-linux-gnu = None
[INFO] [stderr]   CXX_x86_64_unknown_linux_gnu = None
[INFO] [stderr]   HOST_CXX = None
[INFO] [stderr]   CXX = None
[INFO] [stderr]   CXXFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr]   CXXFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr]   HOST_CXXFLAGS = None
[INFO] [stderr]   CXXFLAGS = None
[INFO] [stderr]   CRATE_CC_NO_DEFAULTS = None
[INFO] [stderr]   DEBUG = Some("true")
[INFO] [stderr]   CARGO_CFG_TARGET_FEATURE = Some("fxsr,llvm14-builtins-abi,sse,sse2")
[INFO] [stderr]   running: "c++" "-O2" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "-m64" "-Wall" "-Wextra" "-std=c++20" "-DNDEBUG" "-o" "/opt/rustwide/target/debug/build/inrust-77210ae336c1be1f/out/src/calc24.o" "-c" "src/calc24.cpp"
[INFO] [stderr]   cargo:warning=c++: error: unrecognized command line option '-std=c++20'; did you mean '-std=c++2a'?
[INFO] [stderr]   exit status: 1
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   error occurred: Command "c++" "-O2" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "-m64" "-Wall" "-Wextra" "-std=c++20" "-DNDEBUG" "-o" "/opt/rustwide/target/debug/build/inrust-77210ae336c1be1f/out/src/calc24.o" "-c" "src/calc24.cpp" with args "c++" did not execute successfully (status code exit status: 1).
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7da51812cfdfe674652dff57dd8acaae87a9f8bbe8ddb517b47b4b8aeadc6079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da51812cfdfe674652dff57dd8acaae87a9f8bbe8ddb517b47b4b8aeadc6079", kill_on_drop: false }`
[INFO] [stdout] 7da51812cfdfe674652dff57dd8acaae87a9f8bbe8ddb517b47b4b8aeadc6079