[INFO] cloning repository https://github.com/wilbyang/c2server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wilbyang/c2server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilbyang%2Fc2server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilbyang%2Fc2server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2ba2d91b0b1c1a26f30d7e7454bd241da22736a
[INFO] checking wilbyang/c2server against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilbyang%2Fc2server" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wilbyang/c2server on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wilbyang/c2server
[INFO] finished tweaking git repo https://github.com/wilbyang/c2server
[INFO] tweaked toml for git repo https://github.com/wilbyang/c2server written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wilbyang/c2server 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tonic-build v0.5.2
[INFO] [stderr]   Downloaded anyhow v1.0.43
[INFO] [stderr]   Downloaded tonic v0.5.2
[INFO] [stderr]   Downloaded tokio v1.10.0
[INFO] [stderr]   Downloaded prost-build v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e7c401f558dc7ee6461b073445a190bc6005e95f1783c7df26b1fb7b05519b7
[INFO] running `Command { std: "docker" "start" "-a" "6e7c401f558dc7ee6461b073445a190bc6005e95f1783c7df26b1fb7b05519b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e7c401f558dc7ee6461b073445a190bc6005e95f1783c7df26b1fb7b05519b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e7c401f558dc7ee6461b073445a190bc6005e95f1783c7df26b1fb7b05519b7", kill_on_drop: false }`
[INFO] [stdout] 6e7c401f558dc7ee6461b073445a190bc6005e95f1783c7df26b1fb7b05519b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 027be1cb7dba04299f47dbce286b18ecdb283a44e388d66afd04591d585db7d5
[INFO] running `Command { std: "docker" "start" "-a" "027be1cb7dba04299f47dbce286b18ecdb283a44e388d66afd04591d585db7d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]     Checking tracing-core v0.1.19
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling which v4.2.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]    Compiling prost-build v0.8.0
[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 tokio-macros v1.3.0
[INFO] [stderr]    Compiling prost-derive v0.8.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]    Compiling prost v0.8.0
[INFO] [stderr]    Compiling prost-types v0.8.0
[INFO] [stderr]    Compiling tonic-build v0.5.2
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking tokio-io-timeout v1.1.1
[INFO] [stderr]    Compiling c2rat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking tower v0.4.8
[INFO] [stderr] error: failed to run custom build command for `c2rat 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/c2rat-3123cf2ac9ebdf67/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at build.rs:5:10:
[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:     0x555aa67706b5 - std::backtrace_rs::backtrace::libunwind::trace::hb0d415bcff8c04ff
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x555aa67706b5 - std::backtrace_rs::backtrace::trace_unsynchronized::hd3beb7af6a65b2fb
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x555aa67706b5 - std::sys_common::backtrace::_print_fmt::hb94d89680d7f5d1c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x555aa67706b5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h42d21e2ba62fd274
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x555aa679941b - core::fmt::rt::Argument::fmt::h8932bbbd2b9c37fe
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x555aa679941b - core::fmt::write::h672f14b769052340
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/fmt/mod.rs:1153:17
[INFO] [stderr]      6:     0x555aa676e2af - std::io::Write::write_fmt::h4d626b1d019eca5c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/io/mod.rs:1843:15
[INFO] [stderr]      7:     0x555aa677048e - std::sys_common::backtrace::_print::h745e446c2e03c5ca
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x555aa677048e - std::sys_common::backtrace::print::hf0f0fa4fb70dca2c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x555aa6771c79 - std::panicking::default_hook::{{closure}}::h607769b198639ae5
[INFO] [stderr]     10:     0x555aa67719e3 - std::panicking::default_hook::h1e5811a5a9298ba1
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:292:9
[INFO] [stderr]     11:     0x555aa677224c - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h703c526b9bee37cb
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/alloc/src/boxed.rs:2032:9
[INFO] [stderr]     12:     0x555aa677224c - std::panicking::rust_panic_with_hook::hd0c5dc40875c06ef
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:793:13
[INFO] [stderr]     13:     0x555aa6771ff6 - std::panicking::begin_panic_handler::{{closure}}::hde3f6d4bced89f43
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:658:13
[INFO] [stderr]     14:     0x555aa6770b79 - std::sys_common::backtrace::__rust_end_short_backtrace::h88e846e54ebde2e3
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     15:     0x555aa6771d27 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:646:5
[INFO] [stderr]     16:     0x555aa6554256 - core::panicking::panic_fmt::h5ffad3fb9ad671e0
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/panicking.rs:72:14
[INFO] [stderr]     17:     0x555aa6554786 - core::result::unwrap_failed::hb58638a1c26ab909
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/result.rs:1654:5
[INFO] [stderr]     18:     0x555aa657000a - build_script_build::main::h80a9fca5b38664eb
[INFO] [stderr]     19:     0x555aa65716b3 - core::ops::function::FnOnce::call_once::heac549ed0c316cc0
[INFO] [stderr]     20:     0x555aa656ceb6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h776fb52c7d69f304
[INFO] [stderr]     21:     0x555aa656cf09 - std::rt::lang_start::{{closure}}::he025329cb5a6932e
[INFO] [stderr]     22:     0x555aa6769d71 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hf24a18568366726b
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     23:     0x555aa6769d71 - std::panicking::try::do_call::hfe98fb6a5c700fa1
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:553:40
[INFO] [stderr]     24:     0x555aa6769d71 - std::panicking::try::h887aaa509ba266ad
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:517:19
[INFO] [stderr]     25:     0x555aa6769d71 - std::panic::catch_unwind::hdb24f00ea5a307a8
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panic.rs:146:14
[INFO] [stderr]     26:     0x555aa6769d71 - std::rt::lang_start_internal::{{closure}}::hacbffc0b2f55d28c
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/rt.rs:148:48
[INFO] [stderr]     27:     0x555aa6769d71 - std::panicking::try::do_call::hc810c59098be8c17
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:553:40
[INFO] [stderr]     28:     0x555aa6769d71 - std::panicking::try::h0d072b82be5f3f03
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:517:19
[INFO] [stderr]     29:     0x555aa6769d71 - std::panic::catch_unwind::hb0e7e36556665803
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panic.rs:146:14
[INFO] [stderr]     30:     0x555aa6769d71 - std::rt::lang_start_internal::h4207974af80a0725
[INFO] [stderr]                                  at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/rt.rs:148:20
[INFO] [stderr]     31:     0x555aa656cee7 - std::rt::lang_start::h4618cf5a21ef4647
[INFO] [stderr]     32:     0x555aa6570075 - main
[INFO] [stderr]     33:     0x7f37f1dc3d90 - <unknown>
[INFO] [stderr]     34:     0x7f37f1dc3e40 - __libc_start_main
[INFO] [stderr]     35:     0x555aa6554b25 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "027be1cb7dba04299f47dbce286b18ecdb283a44e388d66afd04591d585db7d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "027be1cb7dba04299f47dbce286b18ecdb283a44e388d66afd04591d585db7d5", kill_on_drop: false }`
[INFO] [stdout] 027be1cb7dba04299f47dbce286b18ecdb283a44e388d66afd04591d585db7d5