[INFO] fetching crate lab_grader 0.11.0... [INFO] testing lab_grader-0.11.0 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate lab_grader 0.11.0 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate lab_grader 0.11.0 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-4/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-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded adler32 v1.1.0 [INFO] [stderr] Downloaded addr2line v0.12.2 [INFO] [stderr] Downloaded universal-hash v0.3.0 [INFO] [stderr] Downloaded wasm-bindgen-futures v0.4.14 [INFO] [stderr] Downloaded aead v0.2.0 [INFO] [stderr] Downloaded polyval v0.3.3 [INFO] [stderr] Downloaded backtrace v0.3.49 [INFO] [stderr] Downloaded generator v0.6.21 [INFO] [stderr] Downloaded bytes v0.5.5 [INFO] [stderr] Downloaded ghash v0.2.3 [INFO] [stderr] Downloaded aes-gcm v0.5.0 [INFO] [stderr] Downloaded hkdf v0.8.0 [INFO] [stderr] Downloaded rocket_contrib v0.4.5 [INFO] [stderr] Downloaded cookie v0.11.3 [INFO] [stderr] Downloaded rocket_codegen v0.4.5 [INFO] [stderr] Downloaded loom v0.3.4 [INFO] [stderr] Downloaded notify v4.0.15 [INFO] [stderr] Downloaded pear_codegen v0.1.4 [INFO] [stderr] Downloaded reqwest v0.10.6 [INFO] [stderr] Downloaded pear v0.1.4 [INFO] [stderr] Downloaded rocket_http v0.4.5 [INFO] [stderr] Downloaded rocket v0.4.5 [INFO] [stderr] Downloaded serde_yaml v0.8.13 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b72d8f257d5702aa8da5bbdd128ed7c62284075c6d7311e2ba5566d4f14f2242 [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" "b72d8f257d5702aa8da5bbdd128ed7c62284075c6d7311e2ba5566d4f14f2242", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b72d8f257d5702aa8da5bbdd128ed7c62284075c6d7311e2ba5566d4f14f2242", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b72d8f257d5702aa8da5bbdd128ed7c62284075c6d7311e2ba5566d4f14f2242", kill_on_drop: false }` [INFO] [stdout] b72d8f257d5702aa8da5bbdd128ed7c62284075c6d7311e2ba5566d4f14f2242 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 80d9668573e003c15d949d3e5da72623fdd2b0188aa686f7e3d315696482dd23 [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" "80d9668573e003c15d949d3e5da72623fdd2b0188aa686f7e3d315696482dd23", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling cc v1.0.56 [INFO] [stderr] Compiling subtle v2.2.3 [INFO] [stderr] Compiling bytes v0.5.5 [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Compiling zeroize v1.1.0 [INFO] [stderr] Compiling state v0.4.1 [INFO] [stderr] Compiling object v0.20.0 [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 addr2line v0.12.2 [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling inotify-sys v0.1.3 [INFO] [stderr] Compiling dirs v1.0.5 [INFO] [stderr] Compiling filetime v0.2.10 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling base64 v0.9.3 [INFO] [stderr] Compiling want v0.3.0 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling term v0.5.2 [INFO] [stderr] Compiling block-cipher-trait v0.6.2 [INFO] [stderr] Compiling universal-hash v0.3.0 [INFO] [stderr] Compiling aead v0.2.0 [INFO] [stderr] Compiling block-buffer v0.7.3 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling aes-soft v0.3.3 [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-dee48bd7e17d176e/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] Error: Pear requires a 'dev' or 'nightly' version of rustc. [INFO] [stderr] Installed version: 1.56.0 (2021-09-07) [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: 0x5557813594ec - std::backtrace_rs::backtrace::libunwind::trace::h51faa62df48810e4 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x5557813594ec - std::backtrace_rs::backtrace::trace_unsynchronized::h91de4d8e16d607e4 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5557813594ec - std::sys_common::backtrace::_print_fmt::h71b0935f97e4322c [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x5557813594ec - ::fmt::h9a78218788c14e18 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x5557813770fc - core::fmt::write::h3381b3176fe2b3d3 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/fmt/mod.rs:1150:17 [INFO] [stderr] 5: 0x555781356985 - std::io::Write::write_fmt::h1d5220480c7a2437 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/io/mod.rs:1667:15 [INFO] [stderr] 6: 0x55578135abe0 - std::sys_common::backtrace::_print::h4b77abc4d907ed0e [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x55578135abe0 - std::sys_common::backtrace::print::hb170c60b542377ad [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x55578135abe0 - std::panicking::default_hook::{{closure}}::h12bbda9af8901ee3 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:210:50 [INFO] [stderr] 9: 0x55578135a797 - std::panicking::default_hook::h8c6c66d3f3ba6768 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:227:9 [INFO] [stderr] 10: 0x55578135b294 - std::panicking::rust_panic_with_hook::h36f2fa0bb09f4069 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:624:17 [INFO] [stderr] 11: 0x5557813240fe - std::panicking::begin_panic::{{closure}}::h90edde86ac31e500 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:544:9 [INFO] [stderr] 12: 0x555781323d58 - std::sys_common::backtrace::__rust_end_short_backtrace::h498d2f0728e58fe5 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x55578132403f - std::panicking::begin_panic::h5a7d64dfd342bc59 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:543:12 [INFO] [stderr] 14: 0x55578132527f - build_script_build::main::h5875bafac1c22629 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.1.4/build.rs:24:13 [INFO] [stderr] 15: 0x555781323a8b - core::ops::function::FnOnce::call_once::hb7411a2661efa6c5 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 16: 0x555781323d9e - std::sys_common::backtrace::__rust_begin_short_backtrace::h23433d5e91677382 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 17: 0x555781323981 - std::rt::lang_start::{{closure}}::h1e33c1d9ef247aa1 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/rt.rs:63:18 [INFO] [stderr] 18: 0x55578135b79a - core::ops::function::impls:: for &F>::call_once::hc590b210ed55e22f [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 19: 0x55578135b79a - std::panicking::try::do_call::h5f0600b7a33ea1af [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:403:40 [INFO] [stderr] 20: 0x55578135b79a - std::panicking::try::he15826df0f376a33 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:367:19 [INFO] [stderr] 21: 0x55578135b79a - std::panic::catch_unwind::hd8af3a578b6b4c86 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panic.rs:129:14 [INFO] [stderr] 22: 0x55578135b79a - std::rt::lang_start_internal::{{closure}}::h301d1329324ae1f0 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/rt.rs:45:48 [INFO] [stderr] 23: 0x55578135b79a - std::panicking::try::do_call::h941e8fdb0bd03655 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:403:40 [INFO] [stderr] 24: 0x55578135b79a - std::panicking::try::ha20a77bf65530f63 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:367:19 [INFO] [stderr] 25: 0x55578135b79a - std::panic::catch_unwind::h33afc061cc69ef90 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panic.rs:129:14 [INFO] [stderr] 26: 0x55578135b79a - std::rt::lang_start_internal::hc05c244593147106 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/rt.rs:45:20 [INFO] [stderr] 27: 0x555781323950 - std::rt::lang_start::hbb9b88ca1843d301 [INFO] [stderr] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/rt.rs:62:5 [INFO] [stderr] 28: 0x5557813258bc - main [INFO] [stderr] 29: 0x7f1595c940b3 - __libc_start_main [INFO] [stderr] 30: 0x55578132292e - _start [INFO] [stderr] 31: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "80d9668573e003c15d949d3e5da72623fdd2b0188aa686f7e3d315696482dd23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80d9668573e003c15d949d3e5da72623fdd2b0188aa686f7e3d315696482dd23", kill_on_drop: false }` [INFO] [stdout] 80d9668573e003c15d949d3e5da72623fdd2b0188aa686f7e3d315696482dd23