[INFO] cloning repository https://github.com/jakubadamw/rust-protobuf-414
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakubadamw/rust-protobuf-414" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakubadamw%2Frust-protobuf-414", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakubadamw%2Frust-protobuf-414'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4e3c3e188c0045b865bd42fedd0066f5a17c2d1
[INFO] checking jakubadamw/rust-protobuf-414 against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakubadamw%2Frust-protobuf-414" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jakubadamw/rust-protobuf-414 on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jakubadamw/rust-protobuf-414
[INFO] finished tweaking git repo https://github.com/jakubadamw/rust-protobuf-414
[INFO] tweaked toml for git repo https://github.com/jakubadamw/rust-protobuf-414 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jakubadamw/rust-protobuf-414 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c9051317b148a57b545eae8f4c87100ac865f89ff9fb0a971e28cabdc4fbd9d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3c9051317b148a57b545eae8f4c87100ac865f89ff9fb0a971e28cabdc4fbd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c9051317b148a57b545eae8f4c87100ac865f89ff9fb0a971e28cabdc4fbd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c9051317b148a57b545eae8f4c87100ac865f89ff9fb0a971e28cabdc4fbd9d", kill_on_drop: false }`
[INFO] [stdout] 3c9051317b148a57b545eae8f4c87100ac865f89ff9fb0a971e28cabdc4fbd9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 744f3186d1b3f5ec66cd5a77fd5140cb475e7b035435586b84436b80f79d9105
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "744f3186d1b3f5ec66cd5a77fd5140cb475e7b035435586b84436b80f79d9105", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling protobuf v2.7.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling protoc v2.7.0
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling protobuf-codegen v2.7.0
[INFO] [stderr]    Compiling protoc-rust v2.7.0
[INFO] [stderr]    Compiling reproduction_414 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `reproduction_414 v0.0.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/reproduction_414-ecfe2f97c0c27f6e/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   [libprotobuf WARNING google/protobuf/compiler/parser.cc:562] No syntax specified for the proto file: example.proto. Please use 'syntax = "proto2";' or 'syntax = "proto3";' to specify a syntax version. (Defaulted to proto2 syntax.)
[INFO] [stderr]   thread 'main' panicked at 'protoc: Os { code: 30, kind: Other, message: "Read-only file system" }', build.rs:13:8
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x56114394bba0 - std::backtrace_rs::backtrace::libunwind::trace::h4dee703919bfd40a
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x56114394bba0 - std::backtrace_rs::backtrace::trace_unsynchronized::h457e839f1a563e20
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x56114394bba0 - std::sys_common::backtrace::_print_fmt::h86a55fb30f8393c8
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x56114394bba0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7b3d6cac46d277e1
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x56114396d2cf - core::fmt::write::h127419eb46f2ecc9
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/core/src/fmt/mod.rs:1092:17
[INFO] [stderr]      5:     0x561143949482 - std::io::Write::write_fmt::h6010cfbb4726588b
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/io/mod.rs:1572:15
[INFO] [stderr]      6:     0x56114394dc45 - std::sys_common::backtrace::_print::h79b4f9652330cc9d
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x56114394dc45 - std::sys_common::backtrace::print::h330bb326a76af8cf
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x56114394dc45 - std::panicking::default_hook::{{closure}}::heb6a42a7d50a472e
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x56114394d6f3 - std::panicking::default_hook::h17e521ba6d68d6e1
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x56114394e24d - std::panicking::rust_panic_with_hook::h70db735e3a6e70cb
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x56114394dde7 - std::panicking::begin_panic_handler::{{closure}}::h777c71c8e5a7e25c
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x56114394c05c - std::sys_common::backtrace::__rust_end_short_backtrace::h3e9bf30168899554
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x56114394dd49 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x5611436b77a1 - core::panicking::panic_fmt::h5322a082d19786c3
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x5611436b7693 - core::option::expect_none_failed::h354eaa93a51d71b8
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/core/src/option.rs:1329:5
[INFO] [stderr]     16:     0x5611436b82a0 - core::result::Result<T,E>::expect::ha1a1d2892d201443
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/core/src/result.rs:997:23
[INFO] [stderr]     17:     0x5611436b8061 - build_script_build::main::h03f2e2f41a970ca0
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:6:5
[INFO] [stderr]     18:     0x5611436b80db - core::ops::function::FnOnce::call_once::h9cf3932887b2aa63
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x5611436b81be - std::sys_common::backtrace::__rust_begin_short_backtrace::ha38e2fb4be08f1fe
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x5611436b8191 - std::rt::lang_start::{{closure}}::h23ccc40804af72de
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x56114394e64a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hbcc915e668c7ca11
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x56114394e64a - std::panicking::try::do_call::h6b0f430d48122ddf
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x56114394e64a - std::panicking::try::h6ba420e2e21b5afa
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x56114394e64a - std::panic::catch_unwind::h8366719d1f615eee
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x56114394e64a - std::rt::lang_start_internal::h965c28c9ce06ee73
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x5611436b8170 - std::rt::lang_start::hdc1a0d012561d8ca
[INFO] [stderr]                                  at /rustc/f82664191d0e8764b7435b9d72eb0e366b8b1464/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x5611436b808c - main
[INFO] [stderr]     28:     0x7f5de6a350b3 - __libc_start_main
[INFO] [stderr]     29:     0x5611436b7e6e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "744f3186d1b3f5ec66cd5a77fd5140cb475e7b035435586b84436b80f79d9105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "744f3186d1b3f5ec66cd5a77fd5140cb475e7b035435586b84436b80f79d9105", kill_on_drop: false }`
[INFO] [stdout] 744f3186d1b3f5ec66cd5a77fd5140cb475e7b035435586b84436b80f79d9105