[INFO] cloning repository https://github.com/nishtahir/hawthorn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nishtahir/hawthorn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnishtahir%2Fhawthorn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnishtahir%2Fhawthorn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0c1c57a82382a8e1833260376e6b908896b4429
[INFO] checking nishtahir/hawthorn against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnishtahir%2Fhawthorn" "/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/nishtahir/hawthorn 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 git repo https://github.com/nishtahir/hawthorn
[INFO] finished tweaking git repo https://github.com/nishtahir/hawthorn
[INFO] tweaked toml for git repo https://github.com/nishtahir/hawthorn written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/nishtahir/hawthorn 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded same-file v1.0.4
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[INFO] [stderr]   Downloaded dotenv v0.13.0
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[INFO] [stderr]   Downloaded regex v1.0.6
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[INFO] [stderr]   Downloaded rocket_cors v0.4.0-rc.2
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[INFO] [stderr]   Downloaded serde v1.0.80
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[INFO] [stderr]   Downloaded indexmap v1.0.2
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[INFO] [stderr]   Downloaded tokio-io v0.1.10
[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" "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] d10df6f4410752b0969f9fbe14b463da6c805c820d47bec9394b839fdf086886
[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" "d10df6f4410752b0969f9fbe14b463da6c805c820d47bec9394b839fdf086886", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d10df6f4410752b0969f9fbe14b463da6c805c820d47bec9394b839fdf086886", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d10df6f4410752b0969f9fbe14b463da6c805c820d47bec9394b839fdf086886", kill_on_drop: false }`
[INFO] [stdout] d10df6f4410752b0969f9fbe14b463da6c805c820d47bec9394b839fdf086886
[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" "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] 7ad25ffb124c1b550dcbf9b486cd9b6b06eeac32ae8ce8850f01d3234dbdbd39
[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" "7ad25ffb124c1b550dcbf9b486cd9b6b06eeac32ae8ce8850f01d3234dbdbd39", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling untrusted v0.6.2
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling indexmap v1.0.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling pear_codegen v0.1.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling rocket_codegen v0.4.0-rc.1
[INFO] [stderr]    Compiling rocket v0.4.0-rc.1
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.6
[INFO] [stderr]     Checking ryu v0.2.7
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking flate2-crc v0.1.1
[INFO] [stderr]    Compiling libsqlite3-sys v0.9.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking toml v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.1.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/pear_codegen-127ebaddb7318eb8/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   [1;31mError:[0m [37mPear requires a nightly or dev version of Rust.[0m
[INFO] [stderr]   [37mInstalled version is:[0m [33m1.46.0-beta.5 (2020-08-21)[0m. [37mMinimum required:[0m [33m1.31.0-nightly (2018-10-05)[0m.
[INFO] [stderr]   thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.2/build.rs:31:13
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5620d55303e5 - 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:     0x5620d55303e5 - 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:     0x5620d55303e5 - std::sys_common::backtrace::_print_fmt::h5e71b67af43fd70d
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x5620d55303e5 - <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:     0x5620d555213c - core::fmt::write::ha20e7262fa3e8a7a
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x5620d552da62 - std::io::Write::write_fmt::h1aebfe8a5a79e36d
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1537
[INFO] [stderr]      6:     0x5620d5532820 - std::sys_common::backtrace::_print::h9c07314cc66ba539
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x5620d5532820 - std::sys_common::backtrace::print::hd1fd65f49a2d8544
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x5620d5532820 - std::panicking::default_hook::{{closure}}::h222da46485ab36fc
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x5620d553256c - std::panicking::default_hook::hc5868949d129ed00
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x5620d5532e63 - std::panicking::rust_panic_with_hook::h26a6ab8b0993c0c8
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x5620d550ba55 - std::panicking::begin_panic::h9a46eba086ed17ab
[INFO] [stderr]                                  at /rustc/cfbc6d4cf1acbac5c025acf8ed68929caa551df3/src/libstd/panicking.rs:456
[INFO] [stderr]     12:     0x5620d5509836 - build_script_build::main::h8a4d316b30a7a5d6
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.2/build.rs:31
[INFO] [stderr]     13:     0x5620d550bfcb - std::rt::lang_start::{{closure}}::hc3796722913bb56b
[INFO] [stderr]                                  at /rustc/cfbc6d4cf1acbac5c025acf8ed68929caa551df3/src/libstd/rt.rs:67
[INFO] [stderr]     14:     0x5620d5533233 - std::rt::lang_start_internal::{{closure}}::h84a998219831fa70
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     15:     0x5620d5533233 - std::panicking::try::do_call::he8e1d689a3e26def
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     16:     0x5620d5533233 - std::panicking::try::h264b6eebc2fa7bbf
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     17:     0x5620d5533233 - std::panic::catch_unwind::hbf28fafa723b2128
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     18:     0x5620d5533233 - std::rt::lang_start_internal::he959aa59bc3ec202
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     19:     0x5620d550bfa7 - std::rt::lang_start::hb42622251d15077c
[INFO] [stderr]                                  at /rustc/cfbc6d4cf1acbac5c025acf8ed68929caa551df3/src/libstd/rt.rs:67
[INFO] [stderr]     20:     0x5620d550a6da - main
[INFO] [stderr]     21:     0x7f688e93c0b3 - __libc_start_main
[INFO] [stderr]     22:     0x5620d550917e - _start
[INFO] [stderr]     23:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7ad25ffb124c1b550dcbf9b486cd9b6b06eeac32ae8ce8850f01d3234dbdbd39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad25ffb124c1b550dcbf9b486cd9b6b06eeac32ae8ce8850f01d3234dbdbd39", kill_on_drop: false }`
[INFO] [stdout] 7ad25ffb124c1b550dcbf9b486cd9b6b06eeac32ae8ce8850f01d3234dbdbd39
