[INFO] cloning repository https://github.com/pingw33n/czar-old
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pingw33n/czar-old" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingw33n%2Fczar-old", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingw33n%2Fczar-old'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 580a67f0a83cbcbc505fb68d57227c46c533ad24
[INFO] checking pingw33n/czar-old against try#51000a35bc99aeffdc092bf2226ab562eedb9eff for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingw33n%2Fczar-old" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pingw33n/czar-old on toolchain 51000a35bc99aeffdc092bf2226ab562eedb9eff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pingw33n/czar-old
[INFO] finished tweaking git repo https://github.com/pingw33n/czar-old
[INFO] tweaked toml for git repo https://github.com/pingw33n/czar-old written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/pingw33n/czar-old 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" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "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 ...
[INFO] [stderr]   Downloaded enum-map-derive v0.4.3
[INFO] [stderr]   Downloaded if_chain v1.0.0
[INFO] [stderr]   Downloaded enum-map v0.6.2
[INFO] [stderr]   Downloaded measure_time v0.6.0
[INFO] [stderr]   Downloaded num_enum_derive v0.5.0
[INFO] [stderr]   Downloaded num_enum v0.5.0
[INFO] [stderr]   Downloaded llvm-sys v100.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46583f23a54929653b5341ac4fcfa26acfedda83f38ba3209e2c9715531c54c9
[INFO] running `Command { std: "docker" "start" "-a" "46583f23a54929653b5341ac4fcfa26acfedda83f38ba3209e2c9715531c54c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46583f23a54929653b5341ac4fcfa26acfedda83f38ba3209e2c9715531c54c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46583f23a54929653b5341ac4fcfa26acfedda83f38ba3209e2c9715531c54c9", kill_on_drop: false }`
[INFO] [stdout] 46583f23a54929653b5341ac4fcfa26acfedda83f38ba3209e2c9715531c54c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad3098bf3283e4d28cb470862e02171e3d3827de29a65f8c7efc1350ce5dabf0
[INFO] running `Command { std: "docker" "start" "-a" "ad3098bf3283e4d28cb470862e02171e3d3827de29a65f8c7efc1350ce5dabf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling czar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking measure_time v0.6.0
[INFO] [stderr]     Checking atomic_refcell v0.1.6
[INFO] [stderr]     Checking if_chain v1.0.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling llvm-sys v100.1.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr] error: failed to run custom build command for `czar v0.1.0 (/opt/rustwide/workdir)`
[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/czar-8146cbff5ee64984/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at build.rs:11:98:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x58ceb4a1d6f2 - std::backtrace_rs::backtrace::libunwind::trace::ha589438cf9d3742b
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x58ceb4a1d6f2 - std::backtrace_rs::backtrace::trace_unsynchronized::h0353f25e0529d0ca
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x58ceb4a1d6f2 - std::sys::backtrace::_print_fmt::hf72eb6789361a7af
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x58ceb4a1d6f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5f7f3d134ce78ca0
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x58ceb4a3b523 - core::fmt::rt::Argument::fmt::h495a83581e15689b
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/core/src/fmt/rt.rs:185:76
[INFO] [stderr]      5:     0x58ceb4a3b523 - core::fmt::write::h06f68f45af9d16b3
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/core/src/fmt/mod.rs:1449:21
[INFO] [stderr]      6:     0x58ceb4a1ace3 - std::io::Write::write_fmt::h3e56d22447b21ebd
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/io/mod.rs:1890:15
[INFO] [stderr]      7:     0x58ceb4a1d542 - std::sys::backtrace::BacktraceLock::print::hd8a8fadd85557a37
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x58ceb4a1e462 - std::panicking::default_hook::{{closure}}::h010c031927d19086
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:300:22
[INFO] [stderr]      9:     0x58ceb4a1e265 - std::panicking::default_hook::h1ea89663d5727653
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:327:9
[INFO] [stderr]     10:     0x58ceb4a1ed32 - std::panicking::rust_panic_with_hook::h9328d1642470e0ef
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:833:13
[INFO] [stderr]     11:     0x58ceb4a1ebca - std::panicking::begin_panic_handler::{{closure}}::h6397a4298eff6b73
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:706:13
[INFO] [stderr]     12:     0x58ceb4a1dbe9 - std::sys::backtrace::__rust_end_short_backtrace::h7802b8296539eacc
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     13:     0x58ceb4a1e85d - __rustc[20dda317529ef0da]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:697:5
[INFO] [stderr]     14:     0x58ceb4a3a7a0 - core::panicking::panic_fmt::hf74784a95675d8cb
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/core/src/panicking.rs:75:14
[INFO] [stderr]     15:     0x58ceb4a3ab36 - core::result::unwrap_failed::h3547aee70b6258ed
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/core/src/result.rs:1704:5
[INFO] [stderr]     16:     0x58ceb49f9df3 - build_script_build::generate_syn_test_input::h3e42c829b6833fec
[INFO] [stderr]     17:     0x58ceb49faea9 - build_script_build::main::hd439d96fa6bbfa5f
[INFO] [stderr]     18:     0x58ceb49fb6f3 - core::ops::function::FnOnce::call_once::h6787f00b0d29fc7a
[INFO] [stderr]     19:     0x58ceb49f4296 - std::sys::backtrace::__rust_begin_short_backtrace::h4901bbf4949cf067
[INFO] [stderr]     20:     0x58ceb49f8c49 - std::rt::lang_start::{{closure}}::h607b648b390aede9
[INFO] [stderr]     21:     0x58ceb4a18120 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5e1dbfa84636c7eb
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     22:     0x58ceb4a18120 - std::panicking::try::do_call::he42f9fd0abff1aaa
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:589:40
[INFO] [stderr]     23:     0x58ceb4a18120 - std::panicking::try::h983aa652baec3422
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:552:19
[INFO] [stderr]     24:     0x58ceb4a18120 - std::panic::catch_unwind::h41d30a44dd52759c
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x58ceb4a18120 - std::rt::lang_start_internal::{{closure}}::hc50345e12637b0b7
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/rt.rs:168:24
[INFO] [stderr]     26:     0x58ceb4a18120 - std::panicking::try::do_call::h415e9a3ccf6bfd6e
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:589:40
[INFO] [stderr]     27:     0x58ceb4a18120 - std::panicking::try::h35cfa36de7936f4f
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panicking.rs:552:19
[INFO] [stderr]     28:     0x58ceb4a18120 - std::panic::catch_unwind::h1e123fb52e031b0e
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x58ceb4a18120 - std::rt::lang_start_internal::h2ea4e33daf228c5a
[INFO] [stderr]                                  at /rustc/51000a35bc99aeffdc092bf2226ab562eedb9eff/library/std/src/rt.rs:164:5
[INFO] [stderr]     30:     0x58ceb49f8c31 - std::rt::lang_start::h1278c50d091c1eec
[INFO] [stderr]     31:     0x58ceb49faf15 - main
[INFO] [stderr]     32:     0x7269dcf381ca - <unknown>
[INFO] [stderr]     33:     0x7269dcf3828b - __libc_start_main
[INFO] [stderr]     34:     0x58ceb49f3665 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ad3098bf3283e4d28cb470862e02171e3d3827de29a65f8c7efc1350ce5dabf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad3098bf3283e4d28cb470862e02171e3d3827de29a65f8c7efc1350ce5dabf0", kill_on_drop: false }`
[INFO] [stdout] ad3098bf3283e4d28cb470862e02171e3d3827de29a65f8c7efc1350ce5dabf0