[INFO] cloning repository https://github.com/rrreeeyyy/mrusty-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rrreeeyyy/mrusty-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrreeeyyy%2Fmrusty-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrreeeyyy%2Fmrusty-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 00ac89f1e7189016c99f61bb11281072b7615ee2
[INFO] checking rrreeeyyy/mrusty-example against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frrreeeyyy%2Fmrusty-example" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rrreeeyyy/mrusty-example on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rrreeeyyy/mrusty-example
[INFO] finished tweaking git repo https://github.com/rrreeeyyy/mrusty-example
[INFO] tweaked toml for git repo https://github.com/rrreeeyyy/mrusty-example written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/rrreeeyyy/mrusty-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mrusty v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1a9c6ce9ef6359023b3a6cd94f891b463e0c99b2bba439af0f216beeeb21c06
[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" "c1a9c6ce9ef6359023b3a6cd94f891b463e0c99b2bba439af0f216beeeb21c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1a9c6ce9ef6359023b3a6cd94f891b463e0c99b2bba439af0f216beeeb21c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1a9c6ce9ef6359023b3a6cd94f891b463e0c99b2bba439af0f216beeeb21c06", kill_on_drop: false }`
[INFO] [stdout] c1a9c6ce9ef6359023b3a6cd94f891b463e0c99b2bba439af0f216beeeb21c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7116c0c7a17c9535989db768e3d9b139f6b29dd4d0c5eac85af114b62a188324
[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" "7116c0c7a17c9535989db768e3d9b139f6b29dd4d0c5eac85af114b62a188324", kill_on_drop: false }`
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling walkdir v0.1.8
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling tar v0.4.30
[INFO] [stderr]    Compiling mrusty v1.0.0
[INFO] [stderr] error: failed to run custom build command for `mrusty v1.0.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mrusty-0ca6868ee02c0c80/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Custom { kind: Other, error: TarError { desc: "failed to create `target`", io: Os { code: 30, kind: Other, message: "Read-only file system" } } }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mrusty-1.0.0/build.rs:26:30
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x563949119640 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
[INFO] [stderr]      1:     0x563949119640 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x563949119640 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x563949119640 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x563949139b1c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/fmt/mod.rs:1076:17
[INFO] [stderr]      5:     0x5639491154f2 - std::io::Write::write_fmt::h16a9fe7680ac245c
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/io/mod.rs:1516:15
[INFO] [stderr]      6:     0x56394911bb65 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x56394911bb65 - std::sys_common::backtrace::print::h5f20e41c85e91716
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x56394911bb65 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x56394911b808 - std::panicking::default_hook::hb3948d1f74b6ff4c
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x56394911c2a1 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:593:17
[INFO] [stderr]     11:     0x56394911bde7 - std::panicking::begin_panic_handler::{{closure}}::h56ae74c6dea6e141
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:499:13
[INFO] [stderr]     12:     0x563949119adc - std::sys_common::backtrace::__rust_end_short_backtrace::h3c4721f56689fae4
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x56394911bd49 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:495:5
[INFO] [stderr]     14:     0x563949138e31 - core::panicking::panic_fmt::hb15d6f55e8472f62
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x563949138c53 - core::option::expect_none_failed::he492a18657d97593
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/option.rs:1268:5
[INFO] [stderr]     16:     0x5639490e43b0 - core::result::Result<T,E>::unwrap::h2eeea1885c94d133
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/result.rs:973:23
[INFO] [stderr]     17:     0x5639490852e2 - build_script_build::main::h2cf038c3844cc90a
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mrusty-1.0.0/build.rs:26:5
[INFO] [stderr]     18:     0x563949085e6b - core::ops::function::FnOnce::call_once::hb049ad80c253940a
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x56394908683e - std::sys_common::backtrace::__rust_begin_short_backtrace::h2679257434ea97e6
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x563949086701 - std::rt::lang_start::{{closure}}::h0bd7a6011a893905
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x56394911c6c7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3f3ba5d1e0ce8d49
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x56394911c6c7 - std::panicking::try::do_call::hd7a374fc87b951e7
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:381:40
[INFO] [stderr]     23:     0x56394911c6c7 - std::panicking::try::hcc68eba0f7d51b82
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panicking.rs:345:19
[INFO] [stderr]     24:     0x56394911c6c7 - std::panic::catch_unwind::h2e8cfcfcf4f9eb6d
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/panic.rs:382:14
[INFO] [stderr]     25:     0x56394911c6c7 - std::rt::lang_start_internal::h8ff82302dd620b52
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x5639490866d7 - std::rt::lang_start::h8b4b2b7bc2d423e3
[INFO] [stderr]                                  at /rustc/430feb24a46993e5073c1bb1b39da190d83fa2bf/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x56394908585a - main
[INFO] [stderr]     28:     0x7fa4643120b3 - __libc_start_main
[INFO] [stderr]     29:     0x5639490850ce - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "7116c0c7a17c9535989db768e3d9b139f6b29dd4d0c5eac85af114b62a188324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7116c0c7a17c9535989db768e3d9b139f6b29dd4d0c5eac85af114b62a188324", kill_on_drop: false }`
[INFO] [stdout] 7116c0c7a17c9535989db768e3d9b139f6b29dd4d0c5eac85af114b62a188324