[INFO] fetching crate shdrr 0.1.3...
[INFO] testing shdrr-0.1.3 against 1.91.0 for beta-1.92-2
[INFO] extracting crate shdrr 0.1.3 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate shdrr 0.1.3
[INFO] finished tweaking crates.io crate shdrr 0.1.3
[INFO] tweaked toml for crates.io crate shdrr 0.1.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate shdrr 0.1.3 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate shdrr 0.1.3 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded walkdir v2.2.8
[INFO] [stderr]   Downloaded winapi-util v0.1.2
[INFO] [stderr]   Downloaded atty v0.2.12
[INFO] [stderr]   Downloaded shaderc v0.5.1
[INFO] [stderr]   Downloaded cmake v0.1.40
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] [stderr]   Downloaded inotify-sys v0.1.3
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded filetime v0.2.5
[INFO] [stderr]   Downloaded log v0.4.7
[INFO] [stderr]   Downloaded iovec v0.1.2
[INFO] [stderr]   Downloaded inotify v0.6.1
[INFO] [stderr]   Downloaded bitflags v1.1.0
[INFO] [stderr]   Downloaded lazycell v1.2.1
[INFO] [stderr]   Downloaded same-file v1.0.4
[INFO] [stderr]   Downloaded notify v4.0.12
[INFO] [stderr]   Downloaded mio v0.6.19
[INFO] [stderr]   Downloaded mio-extras v2.0.5
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] [stderr]   Downloaded shaderc-sys v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dea54ea5a10f62bd28d930d5a3cb2acf51abac40897f44fa6e2f4c8d556af8f2
[INFO] running `Command { std: "docker" "start" "-a" "dea54ea5a10f62bd28d930d5a3cb2acf51abac40897f44fa6e2f4c8d556af8f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dea54ea5a10f62bd28d930d5a3cb2acf51abac40897f44fa6e2f4c8d556af8f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dea54ea5a10f62bd28d930d5a3cb2acf51abac40897f44fa6e2f4c8d556af8f2", kill_on_drop: false }`
[INFO] [stdout] dea54ea5a10f62bd28d930d5a3cb2acf51abac40897f44fa6e2f4c8d556af8f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5a4cba8ba510b997ff52e8dd9916cc6d171665d075048ff6e55cc21bcba6d42
[INFO] running `Command { std: "docker" "start" "-a" "f5a4cba8ba510b997ff52e8dd9916cc6d171665d075048ff6e55cc21bcba6d42", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling shaderc-sys v0.5.1
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.5
[INFO] [stderr]    Compiling atty v0.2.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr] warning: shaderc-sys@0.5.1: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.5.1: Pre-built library not found.  Falling back to from-source build
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.5.1`
[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-f3bf97e58b9e1a46/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=Pre-built library not found.  Falling back to from-source build
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (245) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.5.1/build/cmd_finder.rs:45:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5df728a64632 - std::backtrace_rs::backtrace::libunwind::trace::h62f3c6bea0fedab3
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5df728a64632 - std::backtrace_rs::backtrace::trace_unsynchronized::hc41aaca6c0af0bde
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5df728a64632 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5df728a64632 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h4e0a3aeea0f9c085
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5df728a7493f - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5df728a7493f - core::fmt::write::hecf68a131630c74d
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x5df728a34fc1 - std::io::default_write_fmt::haf8355dc2afbec95
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5df728a34fc1 - std::io::Write::write_fmt::h93c9a261259c931a
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5df728a3fa92 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5df728a423ac - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x5df728a42206 - std::panicking::default_hook::h63f9bf8161c5d325
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x5df728a42a35 - std::panicking::panic_with_hook::h3173740e06bd0752
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x5df728a428ca - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x5df728a3fbd9 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x5df728a2936d - __rustc[de0091b922c53d7e]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x5df728a78360 - core::panicking::panic_fmt::h5138da2ef87be35b
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5df7289e71bb - build_script_build::cmd_finder::CommandFinder::must_have::{{closure}}::h22e868d2081a62b8
[INFO] [stderr]     17:     0x5df7289eb5a5 - core::option::Option<T>::unwrap_or_else::h453d675d6bcceefe
[INFO] [stderr]     18:     0x5df7289e713c - build_script_build::cmd_finder::CommandFinder::must_have::hcda13b79192d8897
[INFO] [stderr]     19:     0x5df7289e9734 - build_script_build::main::h77be0dd7eacbde08
[INFO] [stderr]     20:     0x5df7289ea943 - core::ops::function::FnOnce::call_once::hd364d4f3814bc05f
[INFO] [stderr]     21:     0x5df7289ea576 - std::sys::backtrace::__rust_begin_short_backtrace::haf0cf9b0abe9364c
[INFO] [stderr]     22:     0x5df7289ea4f9 - std::rt::lang_start::{{closure}}::h140e3a9f77a42a44
[INFO] [stderr]     23:     0x5df728a36980 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc7ed5622678f5124
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x5df728a36980 - std::panicking::catch_unwind::do_call::hc59414a11cf2a25a
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stderr]     25:     0x5df728a36980 - std::panicking::catch_unwind::hff67b45e0819a036
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stderr]     26:     0x5df728a36980 - std::panic::catch_unwind::hec0fb0db85f7fd60
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5df728a36980 - std::rt::lang_start_internal::{{closure}}::h74bea026352620a3
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5df728a36980 - std::panicking::catch_unwind::do_call::h931ef1bf7bdfcae2
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stderr]     29:     0x5df728a36980 - std::panicking::catch_unwind::h3816830c825cbe04
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stderr]     30:     0x5df728a36980 - std::panic::catch_unwind::h408406c8f02ebb9d
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5df728a36980 - std::rt::lang_start_internal::hce2b8b328837374b
[INFO] [stderr]                                  at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5df7289ea4e1 - std::rt::lang_start::hc7465ddbc49a407f
[INFO] [stderr]     33:     0x5df7289ecde5 - main
[INFO] [stderr]     34:     0x708ef0e041ca - <unknown>
[INFO] [stderr]     35:     0x708ef0e0428b - __libc_start_main
[INFO] [stderr]     36:     0x5df7289e6255 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f5a4cba8ba510b997ff52e8dd9916cc6d171665d075048ff6e55cc21bcba6d42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a4cba8ba510b997ff52e8dd9916cc6d171665d075048ff6e55cc21bcba6d42", kill_on_drop: false }`
[INFO] [stdout] f5a4cba8ba510b997ff52e8dd9916cc6d171665d075048ff6e55cc21bcba6d42