[INFO] fetching crate rustdemo 0.1.0...
[INFO] checking rustdemo-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate rustdemo 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rustdemo 0.1.0
[INFO] finished tweaking crates.io crate rustdemo 0.1.0
[INFO] tweaked toml for crates.io crate rustdemo 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustdemo 0.1.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] [stderr]       Adding num v0.1.43 (available: v0.4.3)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.9.2)
[INFO] [stderr]       Adding time v0.1.45 (available: v0.3.41)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dcc01d5a5267f19e3345f40fe4dd673c84f8ac7ae54cc60afb43b0907f4feea
[INFO] running `Command { std: "docker" "start" "-a" "4dcc01d5a5267f19e3345f40fe4dd673c84f8ac7ae54cc60afb43b0907f4feea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dcc01d5a5267f19e3345f40fe4dd673c84f8ac7ae54cc60afb43b0907f4feea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dcc01d5a5267f19e3345f40fe4dd673c84f8ac7ae54cc60afb43b0907f4feea", kill_on_drop: false }`
[INFO] [stdout] 4dcc01d5a5267f19e3345f40fe4dd673c84f8ac7ae54cc60afb43b0907f4feea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 519b4db847eb4f32f819886cc477b601ce3726917330b2805db97c5186ab202a
[INFO] running `Command { std: "docker" "start" "-a" "519b4db847eb4f32f819886cc477b601ce3726917330b2805db97c5186ab202a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.1.45
[INFO] [stderr]    Compiling num-rational v0.1.43
[INFO] [stderr]    Compiling num-complex v0.1.44
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling rustdemo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr] error: failed to run custom build command for `rustdemo 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/rustdemo-81632028a149a033/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (372) panicked at build.rs:9:42:
[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:     0x64da2f6d4c02 - std::backtrace_rs::backtrace::libunwind::trace::h105f921882c12e03
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x64da2f6d4c02 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8b40918ba88bae2
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x64da2f6d4c02 - std::sys::backtrace::_print_fmt::h61144b3593b669a6
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x64da2f6d4c02 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha7f14f4d725d0e1f
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x64da2f6f194f - core::fmt::rt::Argument::fmt::h291cffbfb6f5f437
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x64da2f6f194f - core::fmt::write::h613c8eb2432c6a8e
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x64da2f6c6c03 - std::io::default_write_fmt::h1b19b0ce9c092acc
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x64da2f6c6c03 - std::io::Write::write_fmt::ha60efb35d66e9b8c
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x64da2f6d4ed2 - std::sys::backtrace::BacktraceLock::print::hb1963680433203b9
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x64da2f6c4f4c - std::panicking::default_hook::{{closure}}::h12644fad1f9f9c3f
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x64da2f6c4d86 - std::panicking::default_hook::h92d7423bfb093343
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x64da2f6c490c - std::panicking::panic_with_hook::hfd863520fce8e281
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x64da2f6d4f8a - std::panicking::panic_handler::{{closure}}::h75bad88e9628e7c4
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x64da2f6d4ee9 - std::sys::backtrace::__rust_end_short_backtrace::hba2ee9743eb3598b
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x64da2f6c486d - __rustc[d20f6e1e05d5ea87]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x64da2f6f38c0 - core::panicking::panic_fmt::h291b19446b355b1a
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x64da2f6f4306 - core::result::unwrap_failed::he6619352ef31eefc
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/result.rs:1852:5
[INFO] [stderr]     17:     0x64da2f6ae795 - build_script_build::main::h3be43771d9a16ed8
[INFO] [stderr]     18:     0x64da2f6ac243 - core::ops::function::FnOnce::call_once::h0385b6b9639a7715
[INFO] [stderr]     19:     0x64da2f6ac286 - std::sys::backtrace::__rust_begin_short_backtrace::h731d26352224e624
[INFO] [stderr]     20:     0x64da2f6ae559 - std::rt::lang_start::{{closure}}::h5e10495e870aae19
[INFO] [stderr]     21:     0x64da2f6d5730 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd30f70589ce52217
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     22:     0x64da2f6d5730 - std::panicking::catch_unwind::do_call::h229a800b64964a72
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:590:40
[INFO] [stderr]     23:     0x64da2f6d5730 - std::panicking::catch_unwind::hf5b1c782bbaa8c87
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:553:19
[INFO] [stderr]     24:     0x64da2f6d5730 - std::panic::catch_unwind::h44fb21a21f79e7af
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x64da2f6d5730 - std::rt::lang_start_internal::{{closure}}::h3d19e32b9588f707
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x64da2f6d5730 - std::panicking::catch_unwind::do_call::hf0c858106eb39fbd
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:590:40
[INFO] [stderr]     27:     0x64da2f6d5730 - std::panicking::catch_unwind::h92692cc8e925ec21
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panicking.rs:553:19
[INFO] [stderr]     28:     0x64da2f6d5730 - std::panic::catch_unwind::h4f023f48f37702a5
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x64da2f6d5730 - std::rt::lang_start_internal::h80fdaffb9834036d
[INFO] [stderr]                                  at /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x64da2f6ae541 - std::rt::lang_start::h64861e38343d2ad3
[INFO] [stderr]     31:     0x64da2f6af0b5 - main
[INFO] [stderr]     32:     0x78cf965641ca - <unknown>
[INFO] [stderr]     33:     0x78cf9656428b - __libc_start_main
[INFO] [stderr]     34:     0x64da2f6abe75 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "519b4db847eb4f32f819886cc477b601ce3726917330b2805db97c5186ab202a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "519b4db847eb4f32f819886cc477b601ce3726917330b2805db97c5186ab202a", kill_on_drop: false }`
[INFO] [stdout] 519b4db847eb4f32f819886cc477b601ce3726917330b2805db97c5186ab202a