[INFO] cloning repository https://github.com/deciduously/nannou_dots
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/deciduously/nannou_dots" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeciduously%2Fnannou_dots", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeciduously%2Fnannou_dots'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0599732477b5845dbeda3f7878eb10aceaf8d37
[INFO] checking deciduously/nannou_dots against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeciduously%2Fnannou_dots" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/deciduously/nannou_dots
[INFO] finished tweaking git repo https://github.com/deciduously/nannou_dots
[INFO] tweaked toml for git repo https://github.com/deciduously/nannou_dots written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/deciduously/nannou_dots on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/deciduously/nannou_dots 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70f16293f8aaf24ed42cfd14f82d46bbadf413170c39c7a6ea5a407ac539e20e
[INFO] running `Command { std: "docker" "start" "-a" "70f16293f8aaf24ed42cfd14f82d46bbadf413170c39c7a6ea5a407ac539e20e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70f16293f8aaf24ed42cfd14f82d46bbadf413170c39c7a6ea5a407ac539e20e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70f16293f8aaf24ed42cfd14f82d46bbadf413170c39c7a6ea5a407ac539e20e", kill_on_drop: false }`
[INFO] [stdout] 70f16293f8aaf24ed42cfd14f82d46bbadf413170c39c7a6ea5a407ac539e20e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fad064e06dea24c3ac68389766c35a6dbeb639cedcdef5546319f9f3b8c7be5
[INFO] running `Command { std: "docker" "start" "-a" "9fad064e06dea24c3ac68389766c35a6dbeb639cedcdef5546319f9f3b8c7be5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.12
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-bigint v0.2.4
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling shaderc-sys v0.6.1
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking euclid v0.20.7
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking lyon_geom v0.14.1
[INFO] [stderr] warning: shaderc-sys@0.6.1: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.1: System installed library not found.  Falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.1`
[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-4f5ebd8a8226d3ad/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' (1461) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.6.1/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:     0x6198cbee2bc2 - std[7d609349af90bec6]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x6198cbee2bc2 - std[7d609349af90bec6]::backtrace_rs::backtrace::trace_unsynchronized::<std[7d609349af90bec6]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x6198cbee2bc2 - std[7d609349af90bec6]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x6198cbee2bc2 - <<std[7d609349af90bec6]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x6198cbef755a - <core[75ca2badb63c4514]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x6198cbef755a - core[75ca2badb63c4514]::fmt::write
[INFO] [stderr]      6:     0x6198cbee9236 - std[7d609349af90bec6]::io::default_write_fmt::<std[7d609349af90bec6]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x6198cbee9236 - <std[7d609349af90bec6]::sys::stdio::unix::Stderr as std[7d609349af90bec6]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x6198cbec470f - <std[7d609349af90bec6]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x6198cbec470f - std[7d609349af90bec6]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x6198cbedd9b1 - std[7d609349af90bec6]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x6198cbeddb6b - std[7d609349af90bec6]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x6198cbec47c8 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x6198cbebc179 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace::<std[7d609349af90bec6]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x6198cbec516d - __rustc[69841a6cbc58d81d]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x6198cbef7bcc - core[75ca2badb63c4514]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x6198cbe6bb56 - <build_script_build[dcb2780b1bb56da7]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     17:     0x6198cbe6a1c9 - <core[75ca2badb63c4514]::option::Option<std[7d609349af90bec6]::path::PathBuf>>::unwrap_or_else::<<build_script_build[dcb2780b1bb56da7]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     18:     0x6198cbe6a52c - <build_script_build[dcb2780b1bb56da7]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     19:     0x6198cbe6e993 - build_script_build[dcb2780b1bb56da7]::main
[INFO] [stderr]     20:     0x6198cbe70593 - <fn() as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     21:     0x6198cbe6b046 - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     22:     0x6198cbe6bb79 - std[7d609349af90bec6]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     23:     0x6198cbedcaf6 - <&dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x6198cbedcaf6 - std[7d609349af90bec6]::panicking::catch_unwind::do_call::<&dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:581:40
[INFO] [stderr]     25:     0x6198cbedcaf6 - std[7d609349af90bec6]::panicking::catch_unwind::<i32, &dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:544:19
[INFO] [stderr]     26:     0x6198cbedcaf6 - std[7d609349af90bec6]::panic::catch_unwind::<&dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x6198cbedcaf6 - std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x6198cbedcaf6 - std[7d609349af90bec6]::panicking::catch_unwind::do_call::<std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:581:40
[INFO] [stderr]     29:     0x6198cbedcaf6 - std[7d609349af90bec6]::panicking::catch_unwind::<isize, std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:544:19
[INFO] [stderr]     30:     0x6198cbedcaf6 - std[7d609349af90bec6]::panic::catch_unwind::<std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x6198cbedcaf6 - std[7d609349af90bec6]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x6198cbe6b031 - std[7d609349af90bec6]::rt::lang_start::<()>
[INFO] [stderr]     33:     0x6198cbe70715 - main
[INFO] [stderr]     34:     0x712a1e45c1ca - <unknown>
[INFO] [stderr]     35:     0x712a1e45c28b - __libc_start_main
[INFO] [stderr]     36:     0x6198cbe698b5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9fad064e06dea24c3ac68389766c35a6dbeb639cedcdef5546319f9f3b8c7be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fad064e06dea24c3ac68389766c35a6dbeb639cedcdef5546319f9f3b8c7be5", kill_on_drop: false }`
[INFO] [stdout] 9fad064e06dea24c3ac68389766c35a6dbeb639cedcdef5546319f9f3b8c7be5
