[INFO] fetching crate fortytwo 42.0.0...
[INFO] checking fortytwo-42.0.0 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate fortytwo 42.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fortytwo 42.0.0 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", 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-0/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" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d88517c0c9998541e59bf95dd4d43a0f34cf973847048668963f0d78de157ebe
[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" "d88517c0c9998541e59bf95dd4d43a0f34cf973847048668963f0d78de157ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d88517c0c9998541e59bf95dd4d43a0f34cf973847048668963f0d78de157ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88517c0c9998541e59bf95dd4d43a0f34cf973847048668963f0d78de157ebe", kill_on_drop: false }`
[INFO] [stdout] d88517c0c9998541e59bf95dd4d43a0f34cf973847048668963f0d78de157ebe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cde46e51e4a46ee10898edea5779f19cd32609a5cd43c48f3686b24a775cbee
[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" "2cde46e51e4a46ee10898edea5779f19cd32609a5cd43c48f3686b24a775cbee", 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-0d09a737a5ed0a1f/build-script-build` (exit code: 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:     0x559850e1b225 - backtrace::backtrace::libunwind::trace::h5e2646fa3eddf2ea
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x559850e1b225 - backtrace::backtrace::trace_unsynchronized::hb95dd7f77ce47877
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x559850e1b225 - std::sys_common::backtrace::_print_fmt::h5e71b67af43fd70d
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x559850e1b225 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdb4a83d2b61107e5
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x559850e3d04c - core::fmt::write::ha20e7262fa3e8a7a
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x559850e18a52 - std::io::Write::write_fmt::h1aebfe8a5a79e36d
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1537
[INFO] [stderr]      6:     0x559850e1d660 - std::sys_common::backtrace::_print::h9c07314cc66ba539
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x559850e1d660 - std::sys_common::backtrace::print::hd1fd65f49a2d8544
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x559850e1d660 - std::panicking::default_hook::{{closure}}::h222da46485ab36fc
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x559850e1d3ac - std::panicking::default_hook::hc5868949d129ed00
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x559850e1dca3 - std::panicking::rust_panic_with_hook::h26a6ab8b0993c0c8
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x559850e1d89b - rust_begin_unwind
[INFO] [stderr]                                  at src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x559850e1d80b - std::panicking::begin_panic_fmt::h2ff295231415d4a6
[INFO] [stderr]                                  at src/libstd/panicking.rs:391
[INFO] [stderr]     13:     0x559850df2c30 - build_script_build::main::h046f97b3855625c0
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:20
[INFO] [stderr]     14:     0x559850df23bb - std::rt::lang_start::{{closure}}::h9ac1d5112eace25b
[INFO] [stderr]                                  at /rustc/cfbc6d4cf1acbac5c025acf8ed68929caa551df3/src/libstd/rt.rs:67
[INFO] [stderr]     15:     0x559850e1e073 - std::rt::lang_start_internal::{{closure}}::h84a998219831fa70
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     16:     0x559850e1e073 - std::panicking::try::do_call::he8e1d689a3e26def
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     17:     0x559850e1e073 - std::panicking::try::h264b6eebc2fa7bbf
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     18:     0x559850e1e073 - std::panic::catch_unwind::hbf28fafa723b2128
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     19:     0x559850e1e073 - std::rt::lang_start_internal::he959aa59bc3ec202
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     20:     0x559850df2397 - std::rt::lang_start::h0d7acb978e29ad07
[INFO] [stderr]                                  at /rustc/cfbc6d4cf1acbac5c025acf8ed68929caa551df3/src/libstd/rt.rs:67
[INFO] [stderr]     21:     0x559850df2c9a - main
[INFO] [stderr]     22:     0x7f90fffa90b3 - __libc_start_main
[INFO] [stderr]     23:     0x559850df217e - _start
[INFO] [stderr]     24:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "2cde46e51e4a46ee10898edea5779f19cd32609a5cd43c48f3686b24a775cbee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cde46e51e4a46ee10898edea5779f19cd32609a5cd43c48f3686b24a775cbee", kill_on_drop: false }`
[INFO] [stdout] 2cde46e51e4a46ee10898edea5779f19cd32609a5cd43c48f3686b24a775cbee
