[INFO] cloning repository https://github.com/jgallagher/protoc-rust-bug-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgallagher/protoc-rust-bug-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Fprotoc-rust-bug-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Fprotoc-rust-bug-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c702c16cde1996c3ad986c44861337bd335c55a
[INFO] checking jgallagher/protoc-rust-bug-repro against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallagher%2Fprotoc-rust-bug-repro" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jgallagher/protoc-rust-bug-repro
[INFO] finished tweaking git repo https://github.com/jgallagher/protoc-rust-bug-repro
[INFO] tweaked toml for git repo https://github.com/jgallagher/protoc-rust-bug-repro written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jgallagher/protoc-rust-bug-repro on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jgallagher/protoc-rust-bug-repro 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "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 protoc v2.25.2
[INFO] [stderr]   Downloaded protoc-rust v2.25.2
[INFO] [stderr]   Downloaded protobuf-codegen v2.25.2
[INFO] [stderr]   Downloaded which v4.2.2
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.15
[INFO] [stderr]   Downloaded protobuf v2.25.2
[INFO] [stderr]   Downloaded libc v0.2.106
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26b39796bd0d845ca483d3440e5c483d166ff4607522d4f5270480999e9c9e55
[INFO] running `Command { std: "docker" "start" "-a" "26b39796bd0d845ca483d3440e5c483d166ff4607522d4f5270480999e9c9e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26b39796bd0d845ca483d3440e5c483d166ff4607522d4f5270480999e9c9e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26b39796bd0d845ca483d3440e5c483d166ff4607522d4f5270480999e9c9e55", kill_on_drop: false }`
[INFO] [stdout] 26b39796bd0d845ca483d3440e5c483d166ff4607522d4f5270480999e9c9e55
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70f19a61b9f9b46818afccdba25532c41fac82565595b6195c292f9950d12a0e
[INFO] running `Command { std: "docker" "start" "-a" "70f19a61b9f9b46818afccdba25532c41fac82565595b6195c292f9950d12a0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling protobuf v2.25.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling which v4.2.2
[INFO] [stderr]    Compiling protoc v2.25.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling protobuf-codegen v2.25.2
[INFO] [stderr]    Compiling protoc-rust v2.25.2
[INFO] [stderr]    Compiling protoc-rust-bug-repro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `protoc-rust-bug-repro 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/protoc-rust-bug-repro-65dccf5125068acb/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=src/BugReproducer.proto
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (266) panicked at build.rs:7:10:
[INFO] [stderr]   failed to codegen BugReproducer.proto: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5cb0c991f9a2 - std[7d609349af90bec6]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5cb0c991f9a2 - std[7d609349af90bec6]::backtrace_rs::backtrace::trace_unsynchronized::<std[7d609349af90bec6]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5cb0c991f9a2 - std[7d609349af90bec6]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5cb0c991f9a2 - <<std[7d609349af90bec6]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5cb0c99367fa - <core[75ca2badb63c4514]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5cb0c99367fa - core[75ca2badb63c4514]::fmt::write
[INFO] [stderr]      6:     0x5cb0c9925966 - std[7d609349af90bec6]::io::default_write_fmt::<std[7d609349af90bec6]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5cb0c9925966 - <std[7d609349af90bec6]::sys::stdio::unix::Stderr as std[7d609349af90bec6]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x5cb0c990322f - <std[7d609349af90bec6]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5cb0c990322f - std[7d609349af90bec6]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5cb0c991a961 - std[7d609349af90bec6]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5cb0c991ab1b - std[7d609349af90bec6]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5cb0c99032e8 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5cb0c98fac99 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace::<std[7d609349af90bec6]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5cb0c9903c8d - __rustc[69841a6cbc58d81d]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5cb0c9936ecc - core[75ca2badb63c4514]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5cb0c9936c42 - core[75ca2badb63c4514]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x5cb0c9745540 - <core[75ca2badb63c4514]::result::Result<(), std[7d609349af90bec6]::io::error::Error>>::expect
[INFO] [stderr]     18:     0x5cb0c97454a9 - build_script_build[5ecda978599d670e]::main
[INFO] [stderr]     19:     0x5cb0c97455a3 - <fn() as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x5cb0c97453a6 - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     21:     0x5cb0c97453b9 - std[7d609349af90bec6]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     22:     0x5cb0c9919b26 - <&dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x5cb0c9919b26 - std[7d609349af90bec6]::panicking::catch_unwind::do_call::<&dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:581:40
[INFO] [stderr]     24:     0x5cb0c9919b26 - std[7d609349af90bec6]::panicking::catch_unwind::<i32, &dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:544:19
[INFO] [stderr]     25:     0x5cb0c9919b26 - std[7d609349af90bec6]::panic::catch_unwind::<&dyn core[75ca2badb63c4514]::ops::function::Fn<(), Output = i32> + core[75ca2badb63c4514]::marker::Sync + core[75ca2badb63c4514]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x5cb0c9919b26 - std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x5cb0c9919b26 - std[7d609349af90bec6]::panicking::catch_unwind::do_call::<std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:581:40
[INFO] [stderr]     28:     0x5cb0c9919b26 - std[7d609349af90bec6]::panicking::catch_unwind::<isize, std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panicking.rs:544:19
[INFO] [stderr]     29:     0x5cb0c9919b26 - std[7d609349af90bec6]::panic::catch_unwind::<std[7d609349af90bec6]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x5cb0c9919b26 - std[7d609349af90bec6]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/66388cc165a6c4ac98c074dc9f0281ff23528c55/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x5cb0c9745391 - std[7d609349af90bec6]::rt::lang_start::<()>
[INFO] [stderr]     32:     0x5cb0c9745605 - main
[INFO] [stderr]     33:     0x70a4ffd501ca - <unknown>
[INFO] [stderr]     34:     0x70a4ffd5028b - __libc_start_main
[INFO] [stderr]     35:     0x5cb0c9745205 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "70f19a61b9f9b46818afccdba25532c41fac82565595b6195c292f9950d12a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70f19a61b9f9b46818afccdba25532c41fac82565595b6195c292f9950d12a0e", kill_on_drop: false }`
[INFO] [stdout] 70f19a61b9f9b46818afccdba25532c41fac82565595b6195c292f9950d12a0e