[INFO] cloning repository https://github.com/archshift/accion
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/archshift/accion" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farchshift%2Faccion", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farchshift%2Faccion'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58303c21c1efc4e7c9fd4764ff141788ea38d819
[INFO] checking archshift/accion against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farchshift%2Faccion" "/workspace/builds/worker-80/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-80/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/archshift/accion on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/archshift/accion
[INFO] finished tweaking git repo https://github.com/archshift/accion
[INFO] tweaked toml for git repo https://github.com/archshift/accion written to /workspace/builds/worker-80/source/Cargo.toml
[INFO] crate git repo https://github.com/archshift/accion already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/archshift/dynstack`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.61
[INFO] [stderr]   Downloaded derive-newtype v0.2.3
[INFO] [stderr]   Downloaded disjoint-sets v0.4.2
[INFO] [stderr]   Downloaded cbindgen v0.15.0
[INFO] [stderr]   Downloaded iced-x86 v1.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52636ab42427df89107e1334404e6d68d8829979d455da78435beea86f92fdcc
[INFO] running `Command { std: "docker" "start" "-a" "52636ab42427df89107e1334404e6d68d8829979d455da78435beea86f92fdcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52636ab42427df89107e1334404e6d68d8829979d455da78435beea86f92fdcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52636ab42427df89107e1334404e6d68d8829979d455da78435beea86f92fdcc", kill_on_drop: false }`
[INFO] [stdout] 52636ab42427df89107e1334404e6d68d8829979d455da78435beea86f92fdcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 386d6c36d1bc802fc5c926f1d1d5ede7894b73fa7765027819299dad3edc4f7e
[INFO] running `Command { std: "docker" "start" "-a" "386d6c36d1bc802fc5c926f1d1d5ede7894b73fa7765027819299dad3edc4f7e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling cbindgen v0.15.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling dynstack v0.4.0 (https://github.com/archshift/dynstack?rev=7bba8e808b907c6a0d70e648fb0bc5672cf87c22#7bba8e80)
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking disjoint-sets v0.4.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling iced-x86 v1.9.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling derive-newtype v0.2.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling accion v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `accion v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/accion-64f5677f666fa49f/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Could not spawn flex!: Os { code: 2, kind: NotFound, message: "No such file or directory" }', build.rs:47:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5596e614dafc - std::backtrace_rs::backtrace::libunwind::trace::ha21b6ba3016b6364
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x5596e614dafc - std::backtrace_rs::backtrace::trace_unsynchronized::hf515241a118c4e5a
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5596e614dafc - std::sys_common::backtrace::_print_fmt::h339cd474d88b8467
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5596e614dafc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h06b8f714a0700be1
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5596e6173d2c - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/core/src/fmt/mod.rs:1117:17
[INFO] [stderr]      5:     0x5596e614a0f5 - std::io::Write::write_fmt::hb1c61d571fcd8cbf
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/io/mod.rs:1667:15
[INFO] [stderr]      6:     0x5596e614fe10 - std::sys_common::backtrace::_print::hcd1fe1237ea0c752
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5596e614fe10 - std::sys_common::backtrace::print::hae7d6625a78cd32e
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5596e614fe10 - std::panicking::default_hook::{{closure}}::h9a7fffa4e6b396ed
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:210:50
[INFO] [stderr]      9:     0x5596e614f9cb - std::panicking::default_hook::h5dc58e323cddd123
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x5596e61504c4 - std::panicking::rust_panic_with_hook::hbef17e4338d7de57
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:624:17
[INFO] [stderr]     11:     0x5596e614ffa0 - std::panicking::begin_panic_handler::{{closure}}::hd8a92a4b1c3baae0
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:521:13
[INFO] [stderr]     12:     0x5596e614dfc4 - std::sys_common::backtrace::__rust_end_short_backtrace::ha5ac263a7609ace8
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5596e614ff09 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:517:5
[INFO] [stderr]     14:     0x5596e5c4d9d1 - core::panicking::panic_fmt::hcf5f6d96e1dd7099
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/core/src/panicking.rs:93:14
[INFO] [stderr]     15:     0x5596e5c4dac3 - core::result::unwrap_failed::he898b02f57993c42
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/core/src/result.rs:1617:5
[INFO] [stderr]     16:     0x5596e5c9bd9a - core::result::Result<T,E>::expect::hb3bf421743b7d311
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/core/src/result.rs:1259:23
[INFO] [stderr]     17:     0x5596e5c7aa32 - build_script_build::main::hbde7ea38847e7dd4
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:42:21
[INFO] [stderr]     18:     0x5596e5c9651b - core::ops::function::FnOnce::call_once::h5a4ef5f79f813fbf
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x5596e5c76dee - std::sys_common::backtrace::__rust_begin_short_backtrace::h6970c56f36a1ab86
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x5596e5c76ea1 - std::rt::lang_start::{{closure}}::heeb6d3562331042d
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x5596e6150aca - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc9bc8961e4809a14
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x5596e6150aca - std::panicking::try::do_call::h6f00e12df2af6579
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:403:40
[INFO] [stderr]     23:     0x5596e6150aca - std::panicking::try::h588c31a0a9a8ad2c
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:367:19
[INFO] [stderr]     24:     0x5596e6150aca - std::panic::catch_unwind::h8ebc4fcb0e51bec0
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panic.rs:129:14
[INFO] [stderr]     25:     0x5596e6150aca - std::rt::lang_start_internal::{{closure}}::had93e50fbfd893a1
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x5596e6150aca - std::panicking::try::do_call::hf70c5056d8b410b7
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:403:40
[INFO] [stderr]     27:     0x5596e6150aca - std::panicking::try::h0c680320de5deb84
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panicking.rs:367:19
[INFO] [stderr]     28:     0x5596e6150aca - std::panic::catch_unwind::h7b94a99f13366c53
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/panic.rs:129:14
[INFO] [stderr]     29:     0x5596e6150aca - std::rt::lang_start_internal::hca14fb2549072049
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x5596e5c76e70 - std::rt::lang_start::h6004736c54b0da2e
[INFO] [stderr]                                  at /rustc/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x5596e5c7b38c - main
[INFO] [stderr]     32:     0x7f789ecb70b3 - __libc_start_main
[INFO] [stderr]     33:     0x5596e5c4e1ce - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "386d6c36d1bc802fc5c926f1d1d5ede7894b73fa7765027819299dad3edc4f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386d6c36d1bc802fc5c926f1d1d5ede7894b73fa7765027819299dad3edc4f7e", kill_on_drop: false }`
[INFO] [stdout] 386d6c36d1bc802fc5c926f1d1d5ede7894b73fa7765027819299dad3edc4f7e