[INFO] cloning repository https://github.com/zigzagpig/exam-grading
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zigzagpig/exam-grading" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzigzagpig%2Fexam-grading", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzigzagpig%2Fexam-grading'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94404f4b83a252f28ca9a7b593c70e861b539878
[INFO] checking zigzagpig/exam-grading against try#d534db0721b23cf977073bf4cd306dbf501e6b4d for pr-138499
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzigzagpig%2Fexam-grading" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zigzagpig/exam-grading on toolchain d534db0721b23cf977073bf4cd306dbf501e6b4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d534db0721b23cf977073bf4cd306dbf501e6b4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zigzagpig/exam-grading
[INFO] finished tweaking git repo https://github.com/zigzagpig/exam-grading
[INFO] tweaked toml for git repo https://github.com/zigzagpig/exam-grading written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zigzagpig/exam-grading already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d534db0721b23cf977073bf4cd306dbf501e6b4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+d534db0721b23cf977073bf4cd306dbf501e6b4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74232f8ef09e839af8b8a8aa066f014b6132f74078511187f8d505d5dec19492
[INFO] running `Command { std: "docker" "start" "-a" "74232f8ef09e839af8b8a8aa066f014b6132f74078511187f8d505d5dec19492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74232f8ef09e839af8b8a8aa066f014b6132f74078511187f8d505d5dec19492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74232f8ef09e839af8b8a8aa066f014b6132f74078511187f8d505d5dec19492", kill_on_drop: false }`
[INFO] [stdout] 74232f8ef09e839af8b8a8aa066f014b6132f74078511187f8d505d5dec19492
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+d534db0721b23cf977073bf4cd306dbf501e6b4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56ff84d692059945b7a2ba26ce36ce548c3cce2ba98b59fd48cbfc60da2a6687
[INFO] running `Command { std: "docker" "start" "-a" "56ff84d692059945b7a2ba26ce36ce548c3cce2ba98b59fd48cbfc60da2a6687", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr] rustc-LLVM ERROR: IO failure on output stream: No space left on device
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/build/lock_api-97fbf4adf812d0b7/rmetaSuftlL"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/build/num-traits-d1bf9ef960b64817/rmeta9KyO7c"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `num-traits` (build script) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `heck` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/d534db0721b23cf977073bf4cd306dbf501e6b4d/bin/rustc --crate-name heck --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/heck-0.5.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=faa1acbe2bb4e337 -C extra-filename=-8e1f98ffb0a497ae --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (exit status: 101)
[INFO] [stderr] error: could not compile `lock_api` (build script) due to 1 previous error
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/build/doc-comment-095be7ace3ff648c/rmetaByAnvu"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to run custom build command for `rustversion v1.0.17`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustversion-7a98774a027b66fd/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build/build.rs
[INFO] [stderr]   cargo:rustc-check-cfg=cfg(cfg_macro_not_allowed)
[INFO] [stderr]   cargo:rustc-check-cfg=cfg(host_os, values("windows"))
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rustversion-1.0.17/build/build.rs:84:34:
[INFO] [stderr]   failed to write version.expr: Os { code: 28, kind: StorageFull, message: "No space left on device" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x595e5a96b9b2 - std::backtrace_rs::backtrace::libunwind::trace::h30a5d25f97d8af69
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x595e5a96b9b2 - std::backtrace_rs::backtrace::trace_unsynchronized::haec0a85eee45a800
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x595e5a96b9b2 - std::sys::backtrace::_print_fmt::h4bc00a1085d2d883
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x595e5a96b9b2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h6e53838b803494f7
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x595e5a98cdd3 - core::fmt::rt::Argument::fmt::hadc29e7942b7b379
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/core/src/fmt/rt.rs:185:76
[INFO] [stderr]      5:     0x595e5a98cdd3 - core::fmt::write::he916df65c7b0edd0
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/core/src/fmt/mod.rs:1449:21
[INFO] [stderr]      6:     0x595e5a968dc3 - std::io::Write::write_fmt::h8c3a5aab2a15c7f0
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/io/mod.rs:1890:15
[INFO] [stderr]      7:     0x595e5a96b802 - std::sys::backtrace::BacktraceLock::print::h92f8c9398155c89a
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      8:     0x595e5a96c722 - std::panicking::default_hook::{{closure}}::hc4ba984cc374d869
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:298:22
[INFO] [stderr]      9:     0x595e5a96c525 - std::panicking::default_hook::h1671bb97dc0f97de
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:325:9
[INFO] [stderr]     10:     0x595e5a96cff2 - std::panicking::rust_panic_with_hook::hd537e48af212d48a
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:831:13
[INFO] [stderr]     11:     0x595e5a96ce8a - std::panicking::begin_panic_handler::{{closure}}::hfef21f47175a315c
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:704:13
[INFO] [stderr]     12:     0x595e5a96bea9 - std::sys::backtrace::__rust_end_short_backtrace::ha29acc4784b1505f
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     13:     0x595e5a96cb1d - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:695:5
[INFO] [stderr]     14:     0x595e5a98c050 - core::panicking::panic_fmt::hb7ca616529d075f5
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/core/src/panicking.rs:75:14
[INFO] [stderr]     15:     0x595e5a98c3e6 - core::result::unwrap_failed::h95e3eb9da1925247
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/core/src/result.rs:1704:5
[INFO] [stderr]     16:     0x595e5a93fb60 - core::result::Result<T,E>::expect::hfa8b565a812dc26d
[INFO] [stderr]     17:     0x595e5a946aab - build_script_build::main::ha1e369083e388018
[INFO] [stderr]     18:     0x595e5a93e603 - core::ops::function::FnOnce::call_once::h544496e6462c31a8
[INFO] [stderr]     19:     0x595e5a942466 - std::sys::backtrace::__rust_begin_short_backtrace::he4cc33824969d4b0
[INFO] [stderr]     20:     0x595e5a942299 - std::rt::lang_start::{{closure}}::h7d508a7e12e3fb1f
[INFO] [stderr]     21:     0x595e5a965620 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd4d1f1f2c0c90fa6
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     22:     0x595e5a965620 - std::panicking::try::do_call::hf429170d778acf53
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:587:40
[INFO] [stderr]     23:     0x595e5a965620 - std::panicking::try::h0e394328fa942901
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:550:19
[INFO] [stderr]     24:     0x595e5a965620 - std::panic::catch_unwind::hdde183ab2656454b
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x595e5a965620 - std::rt::lang_start_internal::{{closure}}::h89eec9a079fffb31
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/rt.rs:168:24
[INFO] [stderr]     26:     0x595e5a965620 - std::panicking::try::do_call::h26e21ceb9a7677ae
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:587:40
[INFO] [stderr]     27:     0x595e5a965620 - std::panicking::try::hb131fd517ce613da
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panicking.rs:550:19
[INFO] [stderr]     28:     0x595e5a965620 - std::panic::catch_unwind::h91f5d62b82d96785
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x595e5a965620 - std::rt::lang_start_internal::h409379474a335371
[INFO] [stderr]                                  at /rustc/d534db0721b23cf977073bf4cd306dbf501e6b4d/library/std/src/rt.rs:164:5
[INFO] [stderr]     30:     0x595e5a942281 - std::rt::lang_start::h96d819dc83056dfe
[INFO] [stderr]     31:     0x595e5a947005 - main
[INFO] [stderr]     32:     0x79c8c5fb4d90 - <unknown>
[INFO] [stderr]     33:     0x79c8c5fb4e40 - __libc_start_main
[INFO] [stderr]     34:     0x595e5a93cd15 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] error: could not compile `doc-comment` (build script) due to 1 previous error
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaYXVhEI"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaB2yvk5"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libc` (lib) due to 1 previous error
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaPYXm22"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libc` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "56ff84d692059945b7a2ba26ce36ce548c3cce2ba98b59fd48cbfc60da2a6687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ff84d692059945b7a2ba26ce36ce548c3cce2ba98b59fd48cbfc60da2a6687", kill_on_drop: false }`
[INFO] [stdout] 56ff84d692059945b7a2ba26ce36ce548c3cce2ba98b59fd48cbfc60da2a6687