[INFO] cloning repository https://github.com/cmvanb/pong-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cmvanb/pong-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcmvanb%2Fpong-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcmvanb%2Fpong-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f874febc0cfcd4f885b8b5005152bf2f3b3e33b
[INFO] checking cmvanb/pong-rs against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcmvanb%2Fpong-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cmvanb/pong-rs on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cmvanb/pong-rs
[INFO] finished tweaking git repo https://github.com/cmvanb/pong-rs
[INFO] tweaked toml for git repo https://github.com/cmvanb/pong-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/cmvanb/pong-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd1ee57d9bff46a910e5bb8325e9efd2ed9bd74cebf60e365cf16f2d43d56a54
[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" "dd1ee57d9bff46a910e5bb8325e9efd2ed9bd74cebf60e365cf16f2d43d56a54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd1ee57d9bff46a910e5bb8325e9efd2ed9bd74cebf60e365cf16f2d43d56a54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd1ee57d9bff46a910e5bb8325e9efd2ed9bd74cebf60e365cf16f2d43d56a54", kill_on_drop: false }`
[INFO] [stdout] dd1ee57d9bff46a910e5bb8325e9efd2ed9bd74cebf60e365cf16f2d43d56a54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c04b364fab7e3cf0093f7669b262002d0ccd722855ed8dda8d15081d0dd48662
[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" "c04b364fab7e3cf0093f7669b262002d0ccd722855ed8dda8d15081d0dd48662", kill_on_drop: false }`
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[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking itoa v0.4.4
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[INFO] [stderr]    Compiling bitflags v1.1.0
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[INFO] [stderr]    Compiling rand_xorshift v0.1.1
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[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
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[INFO] [stderr]    Compiling err-derive v0.1.5
[INFO] [stderr]    Compiling lexical-core v0.4.2
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[INFO] [stderr]    Compiling im v12.3.4
[INFO] [stderr]    Compiling sentry v0.15.5
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking fluent-syntax v0.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking sized-chunks v0.1.3
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking regex v1.1.7
[INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustc_version_runtime-550011522487f208/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27:48
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55c041473550 - std::backtrace_rs::backtrace::libunwind::trace::h1037ca7e6eeef65c
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55c041473550 - std::backtrace_rs::backtrace::trace_unsynchronized::haaefac1bc3669450
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55c041473550 - std::sys_common::backtrace::_print_fmt::h863a6f5e6d995885
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55c041473550 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h767e17e1aa7df6a8
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55c0414910ff - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x55c041471535 - std::io::Write::write_fmt::h4c802b6f761026c1
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]      6:     0x55c04147520b - std::sys_common::backtrace::_print::h2769edb26a7eb606
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55c04147520b - std::sys_common::backtrace::print::ha71f3549862b4cb6
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55c04147520b - std::panicking::default_hook::{{closure}}::h95488a3bade217f6
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55c041474ce1 - std::panicking::default_hook::h290aa602c0fb11df
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55c041475820 - std::panicking::rust_panic_with_hook::hf32c4fa635e215f2
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:625:17
[INFO] [stderr]     11:     0x55c0414753b7 - std::panicking::begin_panic_handler::{{closure}}::h95197ccd88846f7a
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x55c0414739ec - std::sys_common::backtrace::__rust_end_short_backtrace::h7641df9566f7b7d0
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55c041475319 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x55c04143eff1 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55c04143f083 - core::result::unwrap_failed::hf79563fef9d11ab8
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/core/src/result.rs:1355:5
[INFO] [stderr]     16:     0x55c041442d7a - core::result::Result<T,E>::unwrap::he01d6967d34d3c7e
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x55c0414402ce - build_script_build::main::h69ab4225330822d8
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27:17
[INFO] [stderr]     18:     0x55c04144144b - core::ops::function::FnOnce::call_once::h4aefd2774485edf5
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55c0414417de - std::sys_common::backtrace::__rust_begin_short_backtrace::he2c9ceeec9319c7d
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55c041441401 - std::rt::lang_start::{{closure}}::h8ae687af2336fe8a
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/rt.rs:49:18
[INFO] [stderr]     21:     0x55c041475c5a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h04259e4a34d07c2f
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55c041475c5a - std::panicking::try::do_call::hb8da45704d5cfbbf
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x55c041475c5a - std::panicking::try::h4beadc19a78fec52
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x55c041475c5a - std::panic::catch_unwind::hc58016cd36ba81a4
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/panic.rs:433:14
[INFO] [stderr]     25:     0x55c041475c5a - std::rt::lang_start_internal::hc51399759a90501a
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/rt.rs:34:21
[INFO] [stderr]     26:     0x55c0414413e0 - std::rt::lang_start::hb64c2f04eaa32641
[INFO] [stderr]                                  at /rustc/3bb2879ea9e58d65b875f9a98df44f4a43ce2597/library/std/src/rt.rs:48:5
[INFO] [stderr]     27:     0x55c0414413ac - main
[INFO] [stderr]     28:     0x7fa65dc200b3 - __libc_start_main
[INFO] [stderr]     29:     0x55c04143f74e - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c04b364fab7e3cf0093f7669b262002d0ccd722855ed8dda8d15081d0dd48662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04b364fab7e3cf0093f7669b262002d0ccd722855ed8dda8d15081d0dd48662", kill_on_drop: false }`
[INFO] [stdout] c04b364fab7e3cf0093f7669b262002d0ccd722855ed8dda8d15081d0dd48662