[INFO] cloning repository https://github.com/fitzgen/preduce
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fitzgen/preduce" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffitzgen%2Fpreduce", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffitzgen%2Fpreduce'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e33126d90b793fb1ca6c641e061d0a4b5af09658
[INFO] testing fitzgen/preduce against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffitzgen%2Fpreduce" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fitzgen/preduce on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fitzgen/preduce
[INFO] finished tweaking git repo https://github.com/fitzgen/preduce
[INFO] tweaked toml for git repo https://github.com/fitzgen/preduce written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/fitzgen/preduce already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap v2.25.0
[INFO] [stderr]   Downloaded blake2 v0.6.1
[INFO] [stderr]   Downloaded textwrap v0.6.0
[INFO] [stderr]   Downloaded streaming-stats v0.1.28
[INFO] [stderr]   Downloaded ctrlc v3.0.2
[INFO] [stderr]   Downloaded fixedbitset v0.1.6
[INFO] [stderr]   Downloaded is_executable v0.1.0
[INFO] [stderr]   Downloaded signpost v0.1.0
[INFO] [stderr]   Downloaded histo v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66438a1ffa559c91593809d19ea53ea0c3760461d65a320f7ad617e9620f8b89
[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" "66438a1ffa559c91593809d19ea53ea0c3760461d65a320f7ad617e9620f8b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66438a1ffa559c91593809d19ea53ea0c3760461d65a320f7ad617e9620f8b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66438a1ffa559c91593809d19ea53ea0c3760461d65a320f7ad617e9620f8b89", kill_on_drop: false }`
[INFO] [stdout] 66438a1ffa559c91593809d19ea53ea0c3760461d65a320f7ad617e9620f8b89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c279f4b30f24cafef563831ab0f02904e83967a716e4e61f7a24f9d6e2db4e35
[INFO] running `Command { std: "docker" "start" "-a" "c279f4b30f24cafef563831ab0f02904e83967a716e4e61f7a24f9d6e2db4e35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling serde v1.0.15
[INFO] [stderr]    Compiling is_executable v0.1.0
[INFO] [stderr]    Compiling typenum v1.9.0
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling preduce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling linked-hash-map v0.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling fixedbitset v0.1.6
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling lru-cache v0.1.1
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling ctrlc v3.0.2
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr] error: failed to run custom build command for `preduce v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/preduce-ad71eead7e6cfe05/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build.rs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', build.rs:17:48
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x562e7800a620 - std::backtrace_rs::backtrace::libunwind::trace::h99dbb39dca18857d
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x562e7800a620 - std::backtrace_rs::backtrace::trace_unsynchronized::h832861927e9cfedf
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x562e7800a620 - std::sys_common::backtrace::_print_fmt::h3d18154c77dcf310
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x562e7800a620 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he312f4ad5b9bb346
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x562e780243dc - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x562e78008f15 - std::io::Write::write_fmt::h6aced00850e8186f
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x562e7800c25b - std::sys_common::backtrace::_print::h65d996766de40da4
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x562e7800c25b - std::sys_common::backtrace::print::h40df9727e635f303
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x562e7800c25b - std::panicking::default_hook::{{closure}}::hd2da4327dea91a51
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x562e7800bd31 - std::panicking::default_hook::h3d55120ad6ada158
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x562e7800c924 - std::panicking::rust_panic_with_hook::hf85dd0bb545e3b55
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x562e7800c407 - std::panicking::begin_panic_handler::{{closure}}::h736ae969434da9fa
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x562e7800aafc - std::sys_common::backtrace::__rust_end_short_backtrace::h6133bb80b1d6c3e0
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x562e7800c369 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x562e77ff8fb1 - core::panicking::panic_fmt::hcf5f6d96e1dd7099
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x562e77ff9043 - core::result::unwrap_failed::he898b02f57993c42
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/result.rs:1599:5
[INFO] [stderr]     16:     0x562e77ffb504 - core::result::Result<T,E>::unwrap::h358c56ff4767bc5e
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/result.rs:1281:23
[INFO] [stderr]     17:     0x562e77ff9cfc - build_script_build::main::hc7ed38f76e1621d1
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:17:13
[INFO] [stderr]     18:     0x562e77ffa89b - core::ops::function::FnOnce::call_once::he52482ba485b328f
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x562e77ffa5be - std::sys_common::backtrace::__rust_begin_short_backtrace::h4c8cb8f71c6fc0cf
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x562e77ffa161 - std::rt::lang_start::{{closure}}::h986cc75d5e1d00d4
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x562e7800ce2a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5a0483c8d4e9c15d
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x562e7800ce2a - std::panicking::try::do_call::h6ad7918f175f6ddd
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x562e7800ce2a - std::panicking::try::hcd5af58f52320690
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x562e7800ce2a - std::panic::catch_unwind::hf1ae33ba67228f1e
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:434:14
[INFO] [stderr]     25:     0x562e7800ce2a - std::rt::lang_start_internal::{{closure}}::h4a87bc0aa1312dc5
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x562e7800ce2a - std::panicking::try::do_call::h1ade2a52932fc900
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:401:40
[INFO] [stderr]     27:     0x562e7800ce2a - std::panicking::try::h6f4a87ad169e174b
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:365:19
[INFO] [stderr]     28:     0x562e7800ce2a - std::panic::catch_unwind::h043c7f08019f9e2a
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:434:14
[INFO] [stderr]     29:     0x562e7800ce2a - std::rt::lang_start_internal::h82825699ebfd70bd
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x562e77ffa130 - std::rt::lang_start::h4ca73dc3af8ab014
[INFO] [stderr]                                  at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x562e77ffa0fc - main
[INFO] [stderr]     32:     0x7f733a2ee0b3 - __libc_start_main
[INFO] [stderr]     33:     0x562e77ff970e - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c279f4b30f24cafef563831ab0f02904e83967a716e4e61f7a24f9d6e2db4e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c279f4b30f24cafef563831ab0f02904e83967a716e4e61f7a24f9d6e2db4e35", kill_on_drop: false }`
[INFO] [stdout] c279f4b30f24cafef563831ab0f02904e83967a716e4e61f7a24f9d6e2db4e35