[INFO] cloning repository https://github.com/y0unghe/grin-miner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/y0unghe/grin-miner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy0unghe%2Fgrin-miner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy0unghe%2Fgrin-miner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c44f432cc37f9cb64dfdc52d704583f709715268
[INFO] checking y0unghe/grin-miner against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy0unghe%2Fgrin-miner" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/y0unghe/grin-miner on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/y0unghe/grin-miner
[INFO] finished tweaking git repo https://github.com/y0unghe/grin-miner
[INFO] tweaked toml for git repo https://github.com/y0unghe/grin-miner written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/y0unghe/grin-miner already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec252b53fe4decca557ac7eb21e939990995c3304f79cae86767176c75145471
[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" "ec252b53fe4decca557ac7eb21e939990995c3304f79cae86767176c75145471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec252b53fe4decca557ac7eb21e939990995c3304f79cae86767176c75145471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec252b53fe4decca557ac7eb21e939990995c3304f79cae86767176c75145471", kill_on_drop: false }`
[INFO] [stdout] ec252b53fe4decca557ac7eb21e939990995c3304f79cae86767176c75145471
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b54a391629ef03e8fc0e8d1a6ec34332d4a8da9f3178e9cc5b341fbc700f01b3
[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" "b54a391629ef03e8fc0e8d1a6ec34332d4a8da9f3178e9cc5b341fbc700f01b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking slog v2.1.1
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling cl-sys v0.4.1
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]    Compiling openssl v0.10.15
[INFO] [stderr]     Checking array-macro v1.0.2
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking unicode-segmentation v1.2.1
[INFO] [stderr]     Checking hashbrown v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking hashbrown v0.1.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking enum-map-internals v0.1.2
[INFO] [stderr]     Checking const-cstr v0.2.1
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling cmake v0.1.34
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling ocl-core v0.10.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]     Checking dirs v1.0.3
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]     Checking qutex v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling libz-sys v1.0.22
[INFO] [stderr]    Compiling cuckoo_miner v2.0.0 (/opt/rustwide/workdir/cuckoo-miner)
[INFO] [stdout] warning: struct is never constructed: `Finder`
[INFO] [stdout]   --> cuckoo-miner/src/sanity.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Finder {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> cuckoo-miner/src/sanity.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `maybe_have`
[INFO] [stdout]   --> cuckoo-miner/src/sanity.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn maybe_have<S: AsRef<OsStr>>(&mut self, cmd: S) -> Option<PathBuf> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling openssl-sys v0.9.39
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking signal-hook v0.1.9
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]     Checking pancurses v0.16.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking ocl-core-vector v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.34/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=2af42fd554b627b6 -C extra-filename=-2af42fd554b627b6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8115c969f6e9e75a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-761b25c2edbefa1e.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-a81338cd23b23cba.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b54a391629ef03e8fc0e8d1a6ec34332d4a8da9f3178e9cc5b341fbc700f01b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54a391629ef03e8fc0e8d1a6ec34332d4a8da9f3178e9cc5b341fbc700f01b3", kill_on_drop: false }`
[INFO] [stdout] b54a391629ef03e8fc0e8d1a6ec34332d4a8da9f3178e9cc5b341fbc700f01b3