[INFO] fetching crate ve_shader 0.1.2...
[INFO] testing ve_shader-0.1.2 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate ve_shader 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate ve_shader 0.1.2
[INFO] finished tweaking crates.io crate ve_shader 0.1.2
[INFO] tweaked toml for crates.io crate ve_shader 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ve_shader 0.1.2 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ve_shader 0.1.2 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shaderc v0.6.3
[INFO] [stderr]   Downloaded shaderc-sys v0.6.3
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db9f6ef9e7ec3a84e337bcd8c2bccdfbb13404fd3b703f7f3e6e181ae56c1de6
[INFO] running `Command { std: "docker" "start" "-a" "db9f6ef9e7ec3a84e337bcd8c2bccdfbb13404fd3b703f7f3e6e181ae56c1de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db9f6ef9e7ec3a84e337bcd8c2bccdfbb13404fd3b703f7f3e6e181ae56c1de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db9f6ef9e7ec3a84e337bcd8c2bccdfbb13404fd3b703f7f3e6e181ae56c1de6", kill_on_drop: false }`
[INFO] [stdout] db9f6ef9e7ec3a84e337bcd8c2bccdfbb13404fd3b703f7f3e6e181ae56c1de6
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67ead9697013b7de39d9dd138684f66f84b339ee89a698e896ff1ab18c3f314d
[INFO] running `Command { std: "docker" "start" "-a" "67ead9697013b7de39d9dd138684f66f84b339ee89a698e896ff1ab18c3f314d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr] warning: shaderc-sys@0.6.3: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.3: System installed library not found.  Falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.3`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/shaderc-sys-c561254226140935/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr]   cargo:warning=System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (585) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.6.3/build/cmd_finder.rs:50:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x639744f52db2 - std::backtrace_rs::backtrace::libunwind::trace::h7cddb8376417e7cc
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x639744f52db2 - std::backtrace_rs::backtrace::trace_unsynchronized::hb4e41acf4b349ff1
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x639744f52db2 - std::sys::backtrace::_print_fmt::h1222b80910ba6eb5
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x639744f52db2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5bb8a979ba5db788
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x639744f6314f - core::fmt::rt::Argument::fmt::h2ee2c138a50a7796
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x639744f6314f - core::fmt::write::h1e0dbf07fe3990bd
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x639744f22933 - std::io::default_write_fmt::hb0810a37865e52a5
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x639744f22933 - std::io::Write::write_fmt::h12c8908aaac7ca22
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x639744f2d752 - std::sys::backtrace::BacktraceLock::print::h788d486777205086
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x639744f3089f - std::panicking::default_hook::{{closure}}::ha7bdfeb5949fc0fa
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x639744f306f9 - std::panicking::default_hook::h6dad75ec721846f4
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x639744f30e75 - std::panicking::panic_with_hook::hba00e869ada17676
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x639744f30d0a - std::panicking::panic_handler::{{closure}}::h3d21149c258e5ceb
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x639744f2d889 - std::sys::backtrace::__rust_end_short_backtrace::h4f5d9b9dfb3e6ec1
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x639744f1679d - __rustc[9a7a9f9af7564de1]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x639744f66d70 - core::panicking::panic_fmt::h78e817a90331d98b
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x639744ec3a9b - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::he91c2d97a20b5817
[INFO] [stderr]     17:     0x639744ec9535 - core::option::Option<T>::unwrap_or_else::h1c1246c7dafd8fde
[INFO] [stderr]     18:     0x639744ec3a1c - build_script_build::cmd_finder::CommandFinder::must_have::h298469305b5d9f6c
[INFO] [stderr]     19:     0x639744ec7025 - build_script_build::main::h8c0057b47a5e1bd1
[INFO] [stderr]     20:     0x639744ec8753 - core::ops::function::FnOnce::call_once::h9ef2069308505a38
[INFO] [stderr]     21:     0x639744ec8216 - std::sys::backtrace::__rust_begin_short_backtrace::hdaf6a996e6f90ac1
[INFO] [stderr]     22:     0x639744ec8199 - std::rt::lang_start::{{closure}}::h44e15671492b3dbf
[INFO] [stderr]     23:     0x639744f241d0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h1dc0a50e6295ec78
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     24:     0x639744f241d0 - std::panicking::catch_unwind::do_call::h209f742e9999044e
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x639744f241d0 - std::panicking::catch_unwind::h508c6e2aa6d72749
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x639744f241d0 - std::panic::catch_unwind::hebcbb24aa9914693
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x639744f241d0 - std::rt::lang_start_internal::{{closure}}::h703cbe32967ef209
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x639744f241d0 - std::panicking::catch_unwind::do_call::hf50f2a30bce4e10b
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x639744f241d0 - std::panicking::catch_unwind::hac448d7e3b12daa3
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x639744f241d0 - std::panic::catch_unwind::ha9d74a13d77f299c
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x639744f241d0 - std::rt::lang_start_internal::ha26d244788d1956d
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x639744ec8181 - std::rt::lang_start::h3adf7657e5bca5c1
[INFO] [stderr]     33:     0x639744ecb205 - main
[INFO] [stderr]     34:     0x741e872f61ca - <unknown>
[INFO] [stderr]     35:     0x741e872f628b - __libc_start_main
[INFO] [stderr]     36:     0x639744ec2b55 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "67ead9697013b7de39d9dd138684f66f84b339ee89a698e896ff1ab18c3f314d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ead9697013b7de39d9dd138684f66f84b339ee89a698e896ff1ab18c3f314d", kill_on_drop: false }`
[INFO] [stdout] 67ead9697013b7de39d9dd138684f66f84b339ee89a698e896ff1ab18c3f314d