[INFO] cloning repository https://github.com/graders-rs/graders
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/graders-rs/graders" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgraders-rs%2Fgraders", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgraders-rs%2Fgraders'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1fba21a41d1015a9368d521579c4b88075ebfff
[INFO] checking graders-rs/graders against try#751cdbaf3a893bc71b2c617bb7be22dfea5f0862 for pr-95611
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgraders-rs%2Fgraders" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/graders-rs/graders on toolchain 751cdbaf3a893bc71b2c617bb7be22dfea5f0862
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/graders-rs/graders
[INFO] finished tweaking git repo https://github.com/graders-rs/graders
[INFO] tweaked toml for git repo https://github.com/graders-rs/graders written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/graders-rs/graders already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e30df85c44a38c8429087149e42abf642fd747b17e8d6cb93b795df4983fdce2
[INFO] running `Command { std: "docker" "start" "-a" "e30df85c44a38c8429087149e42abf642fd747b17e8d6cb93b795df4983fdce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e30df85c44a38c8429087149e42abf642fd747b17e8d6cb93b795df4983fdce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e30df85c44a38c8429087149e42abf642fd747b17e8d6cb93b795df4983fdce2", kill_on_drop: false }`
[INFO] [stdout] e30df85c44a38c8429087149e42abf642fd747b17e8d6cb93b795df4983fdce2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5505dfc8fc82eef212b46ef4a0e52874f096d0c3dc82ae62b0b0fbccd4b061b
[INFO] running `Command { std: "docker" "start" "-a" "d5505dfc8fc82eef212b46ef4a0e52874f096d0c3dc82ae62b0b0fbccd4b061b", 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] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking event-listener v2.5.2
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking cookie-factory v0.3.2
[INFO] [stderr]     Checking yasna v0.5.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking async-task v4.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling zstd-safe v4.1.4+zstd.1.5.2
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr] error: could not compile `gimli`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name gimli --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gimli-0.26.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="read"' --cfg 'feature="read-core"' -C metadata=b7a84fadfbdd5082 -C extra-filename=-b7a84fadfbdd5082 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d5505dfc8fc82eef212b46ef4a0e52874f096d0c3dc82ae62b0b0fbccd4b061b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5505dfc8fc82eef212b46ef4a0e52874f096d0c3dc82ae62b0b0fbccd4b061b", kill_on_drop: false }`
[INFO] [stdout] d5505dfc8fc82eef212b46ef4a0e52874f096d0c3dc82ae62b0b0fbccd4b061b