[INFO] fetching crate fortytwo 42.0.0...
[INFO] testing fortytwo-42.0.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate fortytwo 42.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate fortytwo 42.0.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fortytwo 42.0.0
[INFO] finished tweaking crates.io crate fortytwo 42.0.0
[INFO] tweaked toml for crates.io crate fortytwo 42.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate fortytwo 42.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", 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] f3920bae83323e51d5259162892b6b9a676b003f4c9977d473a9cd0463d583d0
[INFO] running `Command { std: "docker" "start" "-a" "f3920bae83323e51d5259162892b6b9a676b003f4c9977d473a9cd0463d583d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3920bae83323e51d5259162892b6b9a676b003f4c9977d473a9cd0463d583d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3920bae83323e51d5259162892b6b9a676b003f4c9977d473a9cd0463d583d0", kill_on_drop: false }`
[INFO] [stdout] f3920bae83323e51d5259162892b6b9a676b003f4c9977d473a9cd0463d583d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+beta-2021-08-01" "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] 4c90ec7db18340e1fcf74727893cca10f9487b2e459fc51e95a4ae0427dfc0d8
[INFO] running `Command { std: "docker" "start" "-a" "4c90ec7db18340e1fcf74727893cca10f9487b2e459fc51e95a4ae0427dfc0d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling fortytwo v42.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `fortytwo v42.0.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/fortytwo-f50727fa5d414d39/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at '
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM `MM' VMMMMM
[INFO] [stderr]   MMMMMV  MV  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM  VM  MMMMMM
[INFO] [stderr]   MMMMMM  M  mMMMMMMMMMMMMMMMMMMMV'"     "`VMMMMMMMMMMMMMM  MMMA `M  MM  MM
[INFO] [stderr]   MM  VM  M  MMMMMMMMMMMMMMMV"                 "VMMMMMMMMM.  'MM  M  M' .MM
[INFO] [stderr]   MM.  M  M  MV  VMMMMMMMV'                      "VMMMMMMMMM.  "  V  V .MMM
[INFO] [stderr]   MMA  V  M  M' ,MMMMMMV'                          "VMMMMMMMM.  ..     mMMM
[INFO] [stderr]   MMMA `     V  MMMMMM'                              `VMMMMMMm  "S"   mMMMM
[INFO] [stderr]   MMMM  .,.,   AMMMMV                                 `VMMM"""   :   .MMMMM
[INFO] [stderr]   MMMM  "B"   MMMMMV                                    M"      .'  .MMMMMM
[INFO] [stderr]   MMMM   :   AV"  V                                     `   .mm.    MMMMMMM
[INFO] [stderr]   MMMM.  `.                                              ..MMMMMm   MMMMMMM
[INFO] [stderr]   MMMMM.. .  .mMMV  .                                   . VMMMMMMA   VMMMMM
[INFO] [stderr]   MMMMMM  AMMMMMM'  *         <^@^>        <==>        .* 'MMMMMMm    MMMMM
[INFO] [stderr]   MMMMM'  MMMMMMV  .I                                 .a@. V'"MMMMA    MMMM
[INFO] [stderr]   MMMMM   MMMMMM(  a@:.                             .' @@! .   "MMMm    MMM
[INFO] [stderr]   MMMM'   MMMV""'  !@a :.                         .';.a@@R ,             MM
[INFO] [stderr]   MMMV    MV"   :  :@@@: :.                     .:  a@@@@! ..............mM
[INFO] [stderr]   MMM'          .  `@@@@ : `...             ..:' : a@@@@@' MMMMMMMMMMMMMMMM
[INFO] [stderr]   MMM  ..........   @@@@@a  :  :'`:`------':  :  a@@@@@@@  MMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMA   `@@@@@@@a  :  :   ::   :  a@@@@@@@@@' :MMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMM.   `@@@@@@@@@@aaA. .;|. .Aaa@@@@@@@@@' .AMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMM.   `@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@   mMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMM.    @@@@@@@@@@@"oOo.oOOo"@@@@@@@'   mMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMm    `@@@@@@@"OOOOOOxOOOOO"@@@V    mMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMA.     `@@@"OOOOOOOOxOOOOO"@'   .AMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMA.     ""V@@AOOOOOOxOOOOO.  .AMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMm.       `OOOOOOOxXOOOo.mMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMAm..   `OOOOOOoxOOOO:MMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMA`OOOOOOOxOOOO:MMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMA`OOOOOOxOOOO;MMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMA`OOOOOOOOO;AMMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMA`OOOOOO;AMMMMMMMMMMMMMMMMMMMMMMMMMMM
[INFO] [stderr]   WIZMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMmmmmmmMMMMMMMMMMMMMMMMMMMMMMMMM*MJJ
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]                      88888b   888    88b  88 88  d888b  88
[INFO] [stderr]                      88   88 88 88   888b 88 88 88   `  88
[INFO] [stderr]                      88888P 88   88  88`8b88 88 88      88
[INFO] [stderr]                      88    d8888888b 88 `888 88 88   ,  `"
[INFO] [stderr]                      88    88     8b 88  `88 88  T888P  88
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   It is said that despite its many glaring (and occasionally fatal) inaccuracies,
[INFO] [stderr]   the Rust Compiler Version 42 has outsold the Encyclopedia Galactica Compiler Collection
[INFO] [stderr]   because it is slightly cheaper,
[INFO] [stderr]   and because it has the words 'DON'T PANIC' in large, friendly letters on the cover.
[INFO] [stderr] 
[INFO] [stderr]   ', build.rs:20:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55620fee04f0 - std::backtrace_rs::backtrace::libunwind::trace::hff4d1766e93f64f1
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55620fee04f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h56bbc8eb78770bcb
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55620fee04f0 - std::sys_common::backtrace::_print_fmt::h5c8e75464faca780
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55620fee04f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48b88277def8b362
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55620fefd59c - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x55620fede4f5 - std::io::Write::write_fmt::hd42607e5d8e44db0
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x55620fee219b - std::sys_common::backtrace::_print::ha537687d6c17dd0d
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55620fee219b - std::sys_common::backtrace::print::h61376ae57d131d72
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55620fee219b - std::panicking::default_hook::{{closure}}::h0f7208c0b9644a54
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55620fee1c71 - std::panicking::default_hook::hdac7fc06578c14ce
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55620fee2864 - std::panicking::rust_panic_with_hook::h72b21c283da3d1ef
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x55620fee2347 - std::panicking::begin_panic_handler::{{closure}}::he5778f1729cff84a
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x55620fee09cc - std::sys_common::backtrace::__rust_end_short_backtrace::h2d11ca8b453b4b1d
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55620fee22a9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x55620feadb9b - std::panicking::begin_panic_fmt::h746518bde832d259
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:457:5
[INFO] [stderr]     15:     0x55620feaf367 - build_script_build::main::hf26d6611b73b2e06
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:20:9
[INFO] [stderr]     16:     0x55620feaf40b - core::ops::function::FnOnce::call_once::h3541c7987a8f476f
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     17:     0x55620feaed0e - std::sys_common::backtrace::__rust_begin_short_backtrace::ha4b01a3a2d0e1b8e
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     18:     0x55620feaec11 - std::rt::lang_start::{{closure}}::he4a86343e2e344da
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:63:18
[INFO] [stderr]     19:     0x55620fee2d6a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::ha88a7d1a4d24e549
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     20:     0x55620fee2d6a - std::panicking::try::do_call::hd3b1d7740607ccc7
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stderr]     21:     0x55620fee2d6a - std::panicking::try::h0ee8c65ac7461507
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stderr]     22:     0x55620fee2d6a - std::panic::catch_unwind::head47f0de4ccd838
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stderr]     23:     0x55620fee2d6a - std::rt::lang_start_internal::{{closure}}::hbc7de8ec820ac085
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:45:48
[INFO] [stderr]     24:     0x55620fee2d6a - std::panicking::try::do_call::h2609e52e8bad4a7b
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stderr]     25:     0x55620fee2d6a - std::panicking::try::hd0929f0b603e0389
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stderr]     26:     0x55620fee2d6a - std::panic::catch_unwind::h27902b81c3e47571
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stderr]     27:     0x55620fee2d6a - std::rt::lang_start_internal::h3fb2d794dd391e3e
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:45:20
[INFO] [stderr]     28:     0x55620feaebe0 - std::rt::lang_start::h482cda2b3507d56e
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:62:5
[INFO] [stderr]     29:     0x55620feaf39c - main
[INFO] [stderr]     30:     0x7f38c27830b3 - __libc_start_main
[INFO] [stderr]     31:     0x55620feae93e - _start
[INFO] [stderr]     32:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4c90ec7db18340e1fcf74727893cca10f9487b2e459fc51e95a4ae0427dfc0d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c90ec7db18340e1fcf74727893cca10f9487b2e459fc51e95a4ae0427dfc0d8", kill_on_drop: false }`
[INFO] [stdout] 4c90ec7db18340e1fcf74727893cca10f9487b2e459fc51e95a4ae0427dfc0d8
