[INFO] fetching crate rustdemo 0.1.0...
[INFO] testing rustdemo-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate rustdemo 0.1.0 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustdemo 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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: v0.3.44)
[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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8be65cfedd11d821f9486650a00263b76f042ee36009b3468e74d451df59f191
[INFO] running `Command { std: "docker" "start" "-a" "8be65cfedd11d821f9486650a00263b76f042ee36009b3468e74d451df59f191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8be65cfedd11d821f9486650a00263b76f042ee36009b3468e74d451df59f191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8be65cfedd11d821f9486650a00263b76f042ee36009b3468e74d451df59f191", kill_on_drop: false }`
[INFO] [stdout] 8be65cfedd11d821f9486650a00263b76f042ee36009b3468e74d451df59f191
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 213f3fa85d241cd3b43473de02670e3cd74212657991f4588188271d9947902c
[INFO] running `Command { std: "docker" "start" "-a" "213f3fa85d241cd3b43473de02670e3cd74212657991f4588188271d9947902c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling num-bigint v0.1.45
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling num-rational v0.1.43
[INFO] [stderr]    Compiling num-complex v0.1.44
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rustdemo v0.1.0 (/opt/rustwide/workdir)
[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-fea3675ab6d8fb2e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (309) 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:     0x5d11e3cd29d2 - std::backtrace_rs::backtrace::libunwind::trace::hc4a5f428cfb78751
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5d11e3cd29d2 - std::backtrace_rs::backtrace::trace_unsynchronized::h20e1095684b4c296
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5d11e3cd29d2 - std::sys::backtrace::_print_fmt::h461f2e3a8f6b29e2
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5d11e3cd29d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h4ee3a75aa71a2c45
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5d11e3ceedef - core::fmt::rt::Argument::fmt::h6f1564705cd089af
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5d11e3ceedef - core::fmt::write::h21ca93b65a7c281a
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x5d11e3cc49b3 - std::io::default_write_fmt::h745a1edf2999cb3b
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5d11e3cc49b3 - std::io::Write::write_fmt::hfc56e66d6e189682
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5d11e3cd2fe2 - std::sys::backtrace::BacktraceLock::print::h58d5d73f9e953cf1
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5d11e3cc2a2c - std::panicking::default_hook::{{closure}}::h1457fbe47c9457d1
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x5d11e3cc286c - std::panicking::default_hook::hccb5e73b206c0830
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x5d11e3cc357a - std::panicking::panic_with_hook::h3190ecc6229cdd29
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x5d11e3cd2dea - std::panicking::panic_handler::{{closure}}::ha1f1b769bc2bb40c
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x5d11e3cd2d49 - std::sys::backtrace::__rust_end_short_backtrace::h5f9cf66f19c2a172
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x5d11e3cc332d - __rustc[a93bd50104b99ad4]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x5d11e3cf18e0 - core::panicking::panic_fmt::hc70c3c83f13c1375
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5d11e3cf22e6 - core::result::unwrap_failed::ha809bf80017a514a
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/result.rs:1852:5
[INFO] [stderr]     17:     0x5d11e3cac795 - build_script_build::main::hf17024196ab7eaf7
[INFO] [stderr]     18:     0x5d11e3caa263 - core::ops::function::FnOnce::call_once::h4dfe531a6dc12f2f
[INFO] [stderr]     19:     0x5d11e3caa286 - std::sys::backtrace::__rust_begin_short_backtrace::h188a9cfa61550a71
[INFO] [stderr]     20:     0x5d11e3cac559 - std::rt::lang_start::{{closure}}::h431c301331b5389d
[INFO] [stderr]     21:     0x5d11e3cd3760 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hae16bf8966719858
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     22:     0x5d11e3cd3760 - std::panicking::catch_unwind::do_call::hd4eb7cf01d0f66cd
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:590:40
[INFO] [stderr]     23:     0x5d11e3cd3760 - std::panicking::catch_unwind::h35b4afc45093edf5
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:553:19
[INFO] [stderr]     24:     0x5d11e3cd3760 - std::panic::catch_unwind::h5a7ef11ac2fa7980
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x5d11e3cd3760 - std::rt::lang_start_internal::{{closure}}::h18f8e059e8eb5f5a
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x5d11e3cd3760 - std::panicking::catch_unwind::do_call::hb4f94f34ea41283f
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:590:40
[INFO] [stderr]     27:     0x5d11e3cd3760 - std::panicking::catch_unwind::hfbb31091ea806204
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panicking.rs:553:19
[INFO] [stderr]     28:     0x5d11e3cd3760 - std::panic::catch_unwind::hc88f452387620cfb
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x5d11e3cd3760 - std::rt::lang_start_internal::h23cfb6dcbf9c9010
[INFO] [stderr]                                  at /rustc/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x5d11e3cac541 - std::rt::lang_start::h39dae2e181ac97a8
[INFO] [stderr]     31:     0x5d11e3cad0b5 - main
[INFO] [stderr]     32:     0x77222c9151ca - <unknown>
[INFO] [stderr]     33:     0x77222c91528b - __libc_start_main
[INFO] [stderr]     34:     0x5d11e3ca9e75 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "213f3fa85d241cd3b43473de02670e3cd74212657991f4588188271d9947902c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "213f3fa85d241cd3b43473de02670e3cd74212657991f4588188271d9947902c", kill_on_drop: false }`
[INFO] [stdout] 213f3fa85d241cd3b43473de02670e3cd74212657991f4588188271d9947902c