[INFO] crate lab_grader 0.11.0 is already in cache [INFO] testing lab_grader-0.11.0 against beta-2020-07-24 for beta-1.46-1 [INFO] extracting crate lab_grader 0.11.0 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate lab_grader 0.11.0 on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate lab_grader 0.11.0 [INFO] finished tweaking crates.io crate lab_grader 0.11.0 [INFO] tweaked toml for crates.io crate lab_grader 0.11.0 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate crates.io crate lab_grader 0.11.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 670b5f5de59cd3fc0df7081ac324cd4369349dc5cbc5906ddea9b709484f02bd [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" "670b5f5de59cd3fc0df7081ac324cd4369349dc5cbc5906ddea9b709484f02bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "670b5f5de59cd3fc0df7081ac324cd4369349dc5cbc5906ddea9b709484f02bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "670b5f5de59cd3fc0df7081ac324cd4369349dc5cbc5906ddea9b709484f02bd", kill_on_drop: false }` [INFO] [stdout] 670b5f5de59cd3fc0df7081ac324cd4369349dc5cbc5906ddea9b709484f02bd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6523123d3de52c338105e42652f43305a98673ff936e51a35557ac375cfa228b [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" "6523123d3de52c338105e42652f43305a98673ff936e51a35557ac375cfa228b", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v1.0.33 [INFO] [stderr] Compiling yansi v0.5.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling cc v1.0.56 [INFO] [stderr] Compiling bytes v0.5.5 [INFO] [stderr] Compiling subtle v2.2.3 [INFO] [stderr] Compiling zeroize v1.1.0 [INFO] [stderr] Compiling state v0.4.1 [INFO] [stderr] Compiling adler32 v1.1.0 [INFO] [stderr] Compiling addr2line v0.12.2 [INFO] [stderr] Compiling socket2 v0.3.12 [INFO] [stderr] Compiling inotify-sys v0.1.3 [INFO] [stderr] Compiling filetime v0.2.10 [INFO] [stderr] Compiling dirs v1.0.5 [INFO] [stderr] Compiling generic-array v0.12.3 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling miniz_oxide v0.3.7 [INFO] [stderr] Compiling hyper v0.10.16 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling term v0.5.2 [INFO] [stderr] Compiling pear_codegen v0.1.4 [INFO] [stderr] Compiling rocket_codegen v0.4.5 [INFO] [stderr] Compiling rocket v0.4.5 [INFO] [stderr] Compiling digest v0.8.1 [INFO] [stderr] Compiling block-cipher-trait v0.6.2 [INFO] [stderr] Compiling universal-hash v0.3.0 [INFO] [stderr] Compiling crypto-mac v0.7.0 [INFO] [stderr] Compiling aead v0.2.0 [INFO] [stderr] Compiling block-buffer v0.7.3 [INFO] [stderr] Compiling tokio v0.2.21 [INFO] [stderr] Compiling http v0.2.1 [INFO] [stderr] Compiling notify v4.0.15 [INFO] [stderr] Compiling polyval v0.3.3 [INFO] [stderr] Compiling hmac v0.7.1 [INFO] [stderr] Compiling aes-soft v0.3.3 [INFO] [stderr] Compiling sha2 v0.8.2 [INFO] [stderr] Compiling hkdf v0.8.0 [INFO] [stderr] Compiling ghash v0.2.3 [INFO] [stderr] error: failed to run custom build command for `pear_codegen v0.1.4` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/pear_codegen-64aaa21e6bc28b3b/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] Error: Pear requires a 'dev' or 'nightly' version of rustc. [INFO] [stderr] Installed version: 1.46.0 (2020-07-23) [INFO] [stderr] Minimum required: 1.31.0-nightly (2018-10-05) [INFO] [stderr] thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.4/build.rs:24:13 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x562094772665 - 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: 0x562094772665 - 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: 0x562094772665 - std::sys_common::backtrace::_print_fmt::h5e71b67af43fd70d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x562094772665 - ::fmt::hdb4a83d2b61107e5 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x5620947943bc - core::fmt::write::ha20e7262fa3e8a7a [INFO] [stderr] at src/libcore/fmt/mod.rs:1076 [INFO] [stderr] 5: 0x56209476fce2 - std::io::Write::write_fmt::h1aebfe8a5a79e36d [INFO] [stderr] at src/libstd/io/mod.rs:1537 [INFO] [stderr] 6: 0x562094774aa0 - std::sys_common::backtrace::_print::h9c07314cc66ba539 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x562094774aa0 - std::sys_common::backtrace::print::hd1fd65f49a2d8544 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x562094774aa0 - std::panicking::default_hook::{{closure}}::h222da46485ab36fc [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 9: 0x5620947747ec - std::panicking::default_hook::hc5868949d129ed00 [INFO] [stderr] at src/libstd/panicking.rs:217 [INFO] [stderr] 10: 0x5620947750e3 - std::panicking::rust_panic_with_hook::h26a6ab8b0993c0c8 [INFO] [stderr] at src/libstd/panicking.rs:526 [INFO] [stderr] 11: 0x56209474ee15 - std::panicking::begin_panic::hb29958ebb627095f [INFO] [stderr] at /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libstd/panicking.rs:456 [INFO] [stderr] 12: 0x56209474a995 - build_script_build::main::hb019262e146b41de [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.4/build.rs:24 [INFO] [stderr] 13: 0x56209474c51b - std::rt::lang_start::{{closure}}::hfcf6da954e9c2ad2 [INFO] [stderr] at /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libstd/rt.rs:67 [INFO] [stderr] 14: 0x5620947754b3 - std::rt::lang_start_internal::{{closure}}::h84a998219831fa70 [INFO] [stderr] at src/libstd/rt.rs:52 [INFO] [stderr] 15: 0x5620947754b3 - std::panicking::try::do_call::he8e1d689a3e26def [INFO] [stderr] at src/libstd/panicking.rs:348 [INFO] [stderr] 16: 0x5620947754b3 - std::panicking::try::h264b6eebc2fa7bbf [INFO] [stderr] at src/libstd/panicking.rs:325 [INFO] [stderr] 17: 0x5620947754b3 - std::panic::catch_unwind::hbf28fafa723b2128 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 18: 0x5620947754b3 - std::rt::lang_start_internal::he959aa59bc3ec202 [INFO] [stderr] at src/libstd/rt.rs:51 [INFO] [stderr] 19: 0x56209474c4f7 - std::rt::lang_start::hc0759513c6a295da [INFO] [stderr] at /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libstd/rt.rs:67 [INFO] [stderr] 20: 0x56209474b19a - main [INFO] [stderr] 21: 0x7f599d2e20b3 - __libc_start_main [INFO] [stderr] 22: 0x56209474a17e - _start [INFO] [stderr] 23: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "6523123d3de52c338105e42652f43305a98673ff936e51a35557ac375cfa228b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6523123d3de52c338105e42652f43305a98673ff936e51a35557ac375cfa228b", kill_on_drop: false }` [INFO] [stdout] 6523123d3de52c338105e42652f43305a98673ff936e51a35557ac375cfa228b