[INFO] cloning repository https://github.com/nichol20/rust-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nichol20/rust-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnichol20%2Frust-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnichol20%2Frust-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9edce89386b38a239c9e1eb94ab7451acb335787
[INFO] checking nichol20/rust-server against try#9228062c11d321a3ea08123f57e47533a3c88b00 for pr-154781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnichol20%2Frust-server" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nichol20/rust-server
[INFO] finished tweaking git repo https://github.com/nichol20/rust-server
[INFO] tweaked toml for git repo https://github.com/nichol20/rust-server written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nichol20/rust-server on toolchain 9228062c11d321a3ea08123f57e47533a3c88b00
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nichol20/rust-server 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" "+9228062c11d321a3ea08123f57e47533a3c88b00" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking nichol20/rust-server against try#9228062c11d321a3ea08123f57e47533a3c88b00 for pr-154781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnichol20%2Frust-server" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nichol20/rust-server
[INFO] finished tweaking git repo https://github.com/nichol20/rust-server
[INFO] tweaked toml for git repo https://github.com/nichol20/rust-server written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nichol20/rust-server on toolchain 9228062c11d321a3ea08123f57e47533a3c88b00
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nichol20/rust-server 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" "+9228062c11d321a3ea08123f57e47533a3c88b00" "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] 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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f7fc923815980637a88831f01b31fba243082186f2d3d700fb1699f0ba8fc7d
[INFO] running `Command { std: "docker" "start" "-a" "5f7fc923815980637a88831f01b31fba243082186f2d3d700fb1699f0ba8fc7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f7fc923815980637a88831f01b31fba243082186f2d3d700fb1699f0ba8fc7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f7fc923815980637a88831f01b31fba243082186f2d3d700fb1699f0ba8fc7d", kill_on_drop: false }`
[INFO] [stdout] 5f7fc923815980637a88831f01b31fba243082186f2d3d700fb1699f0ba8fc7d
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9228062c11d321a3ea08123f57e47533a3c88b00" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f886d347d364eae7bdf4bf7264eb8b5d355c82d45b6c820a13bbcb498b6945f3
[INFO] running `Command { std: "docker" "start" "-a" "f886d347d364eae7bdf4bf7264eb8b5d355c82d45b6c820a13bbcb498b6945f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `rust-server 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/rust-server-420095a5c4c6140d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   gcc -O2 -Wall -Wextra -fPIC -c mathlib.c -o mathlib.o
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Assembler messages:
[INFO] [stderr]   Fatal error: can't create mathlib.o: Read-only file system
[INFO] [stderr]   make: *** [makefile:21: mathlib.o] Error 1
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (37) panicked at build.rs:11:5:
[INFO] [stderr]   assertion failed: status.success()
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5b7badab6b2a - std[27adecc5c7e88f2]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5b7badab6b2a - std[27adecc5c7e88f2]::backtrace_rs::backtrace::trace_unsynchronized::<std[27adecc5c7e88f2]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5b7badab6b2a - std[27adecc5c7e88f2]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5b7badab6b2a - <<std[27adecc5c7e88f2]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[fc8f8dfd031045b]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5b7badac79aa - <core[fc8f8dfd031045b]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5b7badac79aa - core[fc8f8dfd031045b]::fmt::write
[INFO] [stderr]      6:     0x5b7badababd2 - std[27adecc5c7e88f2]::io::default_write_fmt::<std[27adecc5c7e88f2]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5b7badababd2 - <std[27adecc5c7e88f2]::sys::stdio::unix::Stderr as std[27adecc5c7e88f2]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x5b7bada9ccaf - <std[27adecc5c7e88f2]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5b7bada9ccaf - std[27adecc5c7e88f2]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5b7badab2a81 - std[27adecc5c7e88f2]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5b7badab2c3b - std[27adecc5c7e88f2]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5b7bada9cd9a - std[27adecc5c7e88f2]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:691:13
[INFO] [stderr]     13:     0x5b7bada92229 - std[27adecc5c7e88f2]::sys::backtrace::__rust_end_short_backtrace::<std[27adecc5c7e88f2]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5b7bada9d5cd - __rustc[65a001a4c20c61a0]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5b7badac809c - core[fc8f8dfd031045b]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5b7badac8062 - core[fc8f8dfd031045b]::panicking::panic
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/core/src/panicking.rs:150:5
[INFO] [stderr]     17:     0x5b7bada83bfb - build_script_build[43a49d0eb7d14bd2]::main
[INFO] [stderr]     18:     0x5b7bada85f13 - <fn() as core[fc8f8dfd031045b]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x5b7bada83696 - std[27adecc5c7e88f2]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x5b7bada83aa9 - std[27adecc5c7e88f2]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x5b7badab1cc4 - <&dyn core[fc8f8dfd031045b]::ops::function::Fn<(), Output = i32> + core[fc8f8dfd031045b]::marker::Sync + core[fc8f8dfd031045b]::panic::unwind_safe::RefUnwindSafe as core[fc8f8dfd031045b]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::panicking::catch_unwind::do_call::<&dyn core[fc8f8dfd031045b]::ops::function::Fn<(), Output = i32> + core[fc8f8dfd031045b]::marker::Sync + core[fc8f8dfd031045b]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::panicking::catch_unwind::<i32, &dyn core[fc8f8dfd031045b]::ops::function::Fn<(), Output = i32> + core[fc8f8dfd031045b]::marker::Sync + core[fc8f8dfd031045b]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::panic::catch_unwind::<&dyn core[fc8f8dfd031045b]::ops::function::Fn<(), Output = i32> + core[fc8f8dfd031045b]::marker::Sync + core[fc8f8dfd031045b]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::panicking::catch_unwind::do_call::<std[27adecc5c7e88f2]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::panicking::catch_unwind::<isize, std[27adecc5c7e88f2]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::panic::catch_unwind::<std[27adecc5c7e88f2]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x5b7badab1cc4 - std[27adecc5c7e88f2]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/9228062c11d321a3ea08123f57e47533a3c88b00/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x5b7bada83611 - std[27adecc5c7e88f2]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x5b7bada86245 - main
[INFO] [stderr]     32:     0x7054971171ca - <unknown>
[INFO] [stderr]     33:     0x70549711728b - __libc_start_main
[INFO] [stderr]     34:     0x5b7bada82535 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "f886d347d364eae7bdf4bf7264eb8b5d355c82d45b6c820a13bbcb498b6945f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f886d347d364eae7bdf4bf7264eb8b5d355c82d45b6c820a13bbcb498b6945f3", kill_on_drop: false }`
[INFO] [stdout] f886d347d364eae7bdf4bf7264eb8b5d355c82d45b6c820a13bbcb498b6945f3