[INFO] cloning repository https://github.com/Dizans/mapreduce-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dizans/mapreduce-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDizans%2Fmapreduce-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDizans%2Fmapreduce-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eda0196847757393e4b8b23642aafe1ef62de77
[INFO] checking Dizans/mapreduce-rust against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDizans%2Fmapreduce-rust" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dizans/mapreduce-rust on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Dizans/mapreduce-rust
[INFO] finished tweaking git repo https://github.com/Dizans/mapreduce-rust
[INFO] tweaked toml for git repo https://github.com/Dizans/mapreduce-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Dizans/mapreduce-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sharded-slab v0.0.8
[INFO] [stderr]   Downloaded tokio-rustls v0.12.2
[INFO] [stderr]   Downloaded which v3.1.0
[INFO] [stderr]   Downloaded tower-ready-cache v0.3.0
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.0
[INFO] [stderr]   Downloaded tower-limit v0.3.0
[INFO] [stderr]   Downloaded tower-util v0.3.0
[INFO] [stderr]   Downloaded tokio-macros v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b397d8e5a35ce2998d7eba1a97a166860329fb43cd656fbc5b121232dc1c3f8
[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" "6b397d8e5a35ce2998d7eba1a97a166860329fb43cd656fbc5b121232dc1c3f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b397d8e5a35ce2998d7eba1a97a166860329fb43cd656fbc5b121232dc1c3f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b397d8e5a35ce2998d7eba1a97a166860329fb43cd656fbc5b121232dc1c3f8", kill_on_drop: false }`
[INFO] [stdout] 6b397d8e5a35ce2998d7eba1a97a166860329fb43cd656fbc5b121232dc1c3f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9374f324df81797556a0420ead99f1744d0531dbda908b510387d0c044a7b793
[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" "9374f324df81797556a0420ead99f1744d0531dbda908b510387d0c044a7b793", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking regex-syntax v0.6.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling multimap v0.8.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking tracing-core v0.1.9
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking sharded-slab v0.0.8
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling ring v0.16.11
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]    Compiling petgraph v0.5.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.3
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking webpki v0.21.2
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking tokio v0.2.9
[INFO] [stderr]     Checking tracing v0.1.12
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]     Checking tower-ready-cache v0.3.0
[INFO] [stderr]     Checking tokio-rustls v0.12.2
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-util v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.1
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]     Checking prost-types v0.6.1
[INFO] [stderr]     Checking hyper v0.13.2
[INFO] [stderr]    Compiling tonic-build v0.1.1
[INFO] [stderr]     Checking tonic v0.1.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking tracing-serde v0.1.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]    Compiling mr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tracing-subscriber v0.2.0
[INFO] [stderr] error: failed to run custom build command for `mr v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mr-bc85c8474e54b54f/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   out: Output { status: ExitStatus(ExitStatus(256)), stdout: "", stderr: "error: \'rustfmt\' is not installed for the toolchain \'b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8\'\nTo install, run `rustup component add rustfmt --toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8`\n" }
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'assertion failed: out.status.success()', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tonic-build-0.1.1/src/lib.rs:229:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x561fe898b990 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
[INFO] [stderr]      1:     0x561fe898b990 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x561fe898b990 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x561fe898b990 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x561fe89ab18c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/fmt/mod.rs:1076:17
[INFO] [stderr]      5:     0x561fe8988432 - std::io::Write::write_fmt::h16a9fe7680ac245c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/io/mod.rs:1516:15
[INFO] [stderr]      6:     0x561fe898e1b5 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x561fe898e1b5 - std::sys_common::backtrace::print::h5f20e41c85e91716
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x561fe898e1b5 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x561fe898de58 - std::panicking::default_hook::hb3948d1f74b6ff4c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x561fe898e976 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:597:17
[INFO] [stderr]     11:     0x561fe891b26e - std::panicking::begin_panic::{{closure}}::h972a551fd96f664f
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:522:9
[INFO] [stderr]     12:     0x561fe891b429 - std::sys_common::backtrace::__rust_end_short_backtrace::h2a885dfe2d62f843
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x561fe891b19b - std::panicking::begin_panic::ha925b734440e0932
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:521:12
[INFO] [stderr]     14:     0x561fe86c5e70 - tonic_build::fmt::hbf7a2e49d03b3596
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tonic-build-0.1.1/src/lib.rs:229:9
[INFO] [stderr]     15:     0x561fe869fdcc - tonic_build::Builder::compile::he238f940777389ef
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tonic-build-0.1.1/src/lib.rs:172:17
[INFO] [stderr]     16:     0x561fe869f4aa - tonic_build::compile_protos::hb252f2016a13637c
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tonic-build-0.1.1/src/lib.rs:208:5
[INFO] [stderr]     17:     0x561fe869b385 - build_script_build::main::hb997a6a8a58825b1
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:2:5
[INFO] [stderr]     18:     0x561fe869e85b - core::ops::function::FnOnce::call_once::hf8211279080d5db8
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x561fe869b46e - std::sys_common::backtrace::__rust_begin_short_backtrace::hb99483c6d0fbf6d7
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x561fe869e291 - std::rt::lang_start::{{closure}}::ha77efc8d04517bdd
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x561fe898ee67 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3f3ba5d1e0ce8d49
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x561fe898ee67 - std::panicking::try::do_call::hd7a374fc87b951e7
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:381:40
[INFO] [stderr]     23:     0x561fe898ee67 - std::panicking::try::hcc68eba0f7d51b82
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:345:19
[INFO] [stderr]     24:     0x561fe898ee67 - std::panic::catch_unwind::h2e8cfcfcf4f9eb6d
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panic.rs:382:14
[INFO] [stderr]     25:     0x561fe898ee67 - std::rt::lang_start_internal::h8ff82302dd620b52
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x561fe869e267 - std::rt::lang_start::hf713ac6ae8fa7a3c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x561fe869b3ea - main
[INFO] [stderr]     28:     0x7f2550ed40b3 - __libc_start_main
[INFO] [stderr]     29:     0x561fe86880de - _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" "9374f324df81797556a0420ead99f1744d0531dbda908b510387d0c044a7b793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9374f324df81797556a0420ead99f1744d0531dbda908b510387d0c044a7b793", kill_on_drop: false }`
[INFO] [stdout] 9374f324df81797556a0420ead99f1744d0531dbda908b510387d0c044a7b793