[INFO] cloning repository https://github.com/shorii/asset-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shorii/asset-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshorii%2Fasset-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshorii%2Fasset-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d66ef84be6df611651ab45cbc7b173acc3d85f5
[INFO] checking shorii/asset-rs against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshorii%2Fasset-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shorii/asset-rs on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shorii/asset-rs
[INFO] finished tweaking git repo https://github.com/shorii/asset-rs
[INFO] tweaked toml for git repo https://github.com/shorii/asset-rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/shorii/asset-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-10/source/example/Cargo.toml: file found to be present in multiple build targets: /workspace/builds/worker-10/source/example/./src/main.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 176470d17c697441e5b7ec4616f08e9ec078004e10813e733851cbb16800a790
[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" "176470d17c697441e5b7ec4616f08e9ec078004e10813e733851cbb16800a790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "176470d17c697441e5b7ec4616f08e9ec078004e10813e733851cbb16800a790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176470d17c697441e5b7ec4616f08e9ec078004e10813e733851cbb16800a790", kill_on_drop: false }`
[INFO] [stdout] 176470d17c697441e5b7ec4616f08e9ec078004e10813e733851cbb16800a790
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4898f838fd5167b0986f66d09fc63117366703177190aa211fbd0196996789e1
[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" "4898f838fd5167b0986f66d09fc63117366703177190aa211fbd0196996789e1", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/example/Cargo.toml: file found to be present in multiple build targets: /opt/rustwide/workdir/example/./src/main.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling hex-literal v0.3.1
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking asset v0.1.0 (/opt/rustwide/workdir/asset)
[INFO] [stderr]    Compiling example v0.1.0 (/opt/rustwide/workdir/example)
[INFO] [stderr] error: failed to run custom build command for `example v0.1.0 (/opt/rustwide/workdir/example)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/example-c96f7cdf574cc12a/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', example/build.rs:7:51
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5563e33bbfb0 - std::backtrace_rs::backtrace::libunwind::trace::h247d9dc800afe0ad
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x5563e33bbfb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h9a4153306adf486c
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5563e33bbfb0 - std::sys_common::backtrace::_print_fmt::h1ac8daa5000ee24c
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5563e33bbfb0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h22a8e55d2cc5363a
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5563e33d721f - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x5563e33b9f25 - std::io::Write::write_fmt::h441a47830651073b
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/io/mod.rs:1580:15
[INFO] [stderr]      6:     0x5563e33bdd5b - std::sys_common::backtrace::_print::hd1e0ee1c195f9f05
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5563e33bdd5b - std::sys_common::backtrace::print::h7d1098def5c25d20
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5563e33bdd5b - std::panicking::default_hook::{{closure}}::h484b8b15967e42c8
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x5563e33bd83d - std::panicking::default_hook::h82c79ca49716b79d
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x5563e33be30d - std::panicking::rust_panic_with_hook::h6df253a3c973d6b6
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x5563e33bded7 - std::panicking::begin_panic_handler::{{closure}}::hc6a4120674935ea3
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x5563e33bc46c - std::sys_common::backtrace::__rust_end_short_backtrace::h9b5f057c8351b0b1
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5563e33bde69 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x5563e3359ec1 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x5563e3359e0d - core::panicking::panic::h3de4db67bd397eb3
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x5563e3366634 - core::option::Option<T>::unwrap::hf8a38d98834c9ff2
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/option.rs:386:21
[INFO] [stderr]     17:     0x5563e336e333 - build_script_build::main::h02422a64bd8ee1f3
[INFO] [stderr]                                  at /opt/rustwide/workdir/example/build.rs:7:25
[INFO] [stderr]     18:     0x5563e33674cb - core::ops::function::FnOnce::call_once::h8cd6bbfc4d94edd4
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x5563e336e68e - std::sys_common::backtrace::__rust_begin_short_backtrace::h8da79cd007261dd1
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x5563e336c9e1 - std::rt::lang_start::{{closure}}::h20eab154ad823d21
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x5563e33be80a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h98fbc5823393ca6f
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x5563e33be80a - std::panicking::try::do_call::h210d0709dd1d5fd6
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x5563e33be80a - std::panicking::try::hc60c2c01c5cf7473
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x5563e33be80a - std::panic::catch_unwind::h7480a56877b30ca9
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x5563e33be80a - std::rt::lang_start_internal::he77194431b0ee4a2
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x5563e336c9c0 - std::rt::lang_start::h0d789eced2d6d411
[INFO] [stderr]                                  at /rustc/a836d9b6413d9d593be6c09463ff8c4c70e56599/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x5563e336e62c - main
[INFO] [stderr]     28:     0x7f58c2cd00b3 - __libc_start_main
[INFO] [stderr]     29:     0x5563e335a5fe - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4898f838fd5167b0986f66d09fc63117366703177190aa211fbd0196996789e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4898f838fd5167b0986f66d09fc63117366703177190aa211fbd0196996789e1", kill_on_drop: false }`
[INFO] [stdout] 4898f838fd5167b0986f66d09fc63117366703177190aa211fbd0196996789e1