[INFO] cloning repository https://github.com/VenkatTeja/libra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VenkatTeja/libra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVenkatTeja%2Flibra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVenkatTeja%2Flibra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bdacbf844ceff673fce1473c8fbba79fe8f05d19
[INFO] checking VenkatTeja/libra against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVenkatTeja%2Flibra" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VenkatTeja/libra on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/VenkatTeja/libra
[INFO] finished tweaking git repo https://github.com/VenkatTeja/libra
[INFO] tweaked toml for git repo https://github.com/VenkatTeja/libra written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/VenkatTeja/libra already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50c93807af0e009c6be4f76c86da0654e85b98a931034bbb6db386962c1497f8
[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" "50c93807af0e009c6be4f76c86da0654e85b98a931034bbb6db386962c1497f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50c93807af0e009c6be4f76c86da0654e85b98a931034bbb6db386962c1497f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50c93807af0e009c6be4f76c86da0654e85b98a931034bbb6db386962c1497f8", kill_on_drop: false }`
[INFO] [stdout] 50c93807af0e009c6be4f76c86da0654e85b98a931034bbb6db386962c1497f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2269bb7be8a94e761307fe87add00376afd7dcf099a17ea683229835a66d05d1
[INFO] running `Command { std: "docker" "start" "-a" "2269bb7be8a94e761307fe87add00376afd7dcf099a17ea683229835a66d05d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
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[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling getrandom v0.1.15
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[INFO] [stderr]    Compiling vdf v0.1.0 (/opt/rustwide/workdir/ol/verifiable_delay/vdf)
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> ol/verifiable_delay/vdf/build.rs:74:62
[INFO] [stdout]    |
[INFO] [stdout] 74 |         "#[allow(warnings)]\nconst {}: [{}; {}] = {:#?};\n\n";
[INFO] [stdout]    |                                                              ^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     write!(f, const_fmt!(), name, t, obj.len(), obj).expect("i/o error in build script");
[INFO] [stdout]    |               ------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: this warning originates in the macro `const_fmt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
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[INFO] [stderr]     Checking smallvec v0.6.13
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[INFO] [stderr]     Checking classgroup v0.1.0 (/opt/rustwide/workdir/ol/verifiable_delay/classgroup)
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking ordered-float v2.0.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
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[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stdout] warning: `__gmpz_sizeinbase` redeclared with a different signature
[INFO] [stdout]   --> ol/verifiable_delay/classgroup/src/gmp_classgroup/ffi.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn __gmpz_sizeinbase(op: &Mpz, base: c_int) -> size_t;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this signature doesn't match the previous declaration
[INFO] [stdout]    |
[INFO] [stdout]   ::: ol/verifiable_delay/classgroup/src/gmp/mpz.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn __gmpz_sizeinbase(op: mpz_srcptr, base: c_int) -> size_t;
[INFO] [stdout]    |     ------------------------------------------------------------ `__gmpz_sizeinbase` previously declared here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(clashing_extern_declarations)]` on by default
[INFO] [stdout]    = note: expected `unsafe extern "C" fn(*const mpz_struct, i32) -> usize`
[INFO] [stdout]               found `for<'r> unsafe extern "C" fn(&'r Mpz, i32) -> usize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `__gmpz_export` redeclared with a different signature
[INFO] [stdout]    --> ol/verifiable_delay/classgroup/src/gmp_classgroup/ffi.rs:57:5
[INFO] [stdout]     |
[INFO] [stdout] 57  | /     fn __gmpz_export(
[INFO] [stdout] 58  | |         rop: *mut c_void,
[INFO] [stdout] 59  | |         countp: *mut size_t,
[INFO] [stdout] 60  | |         order: c_int,
[INFO] [stdout] ...   |
[INFO] [stdout] 64  | |         op: &Mpz,
[INFO] [stdout] 65  | |     ) -> *mut c_void;
[INFO] [stdout]     | |_____________________^ this signature doesn't match the previous declaration
[INFO] [stdout]     |
[INFO] [stdout]    ::: ol/verifiable_delay/classgroup/src/gmp/mpz.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     fn __gmpz_export(
[INFO] [stdout] 102 | |         rop: *mut c_void,
[INFO] [stdout] 103 | |         countp: *mut size_t,
[INFO] [stdout] 104 | |         order: c_int,
[INFO] [stdout] ...   |
[INFO] [stdout] 108 | |         op: mpz_srcptr,
[INFO] [stdout] 109 | |     );
[INFO] [stdout]     | |______- `__gmpz_export` previously declared here
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected `unsafe extern "C" fn(*mut c_void, *mut usize, i32, usize, i32, usize, *const mpz_struct)`
[INFO] [stdout]                found `for<'r> unsafe extern "C" fn(*mut c_void, *mut usize, i32, usize, i32, usize, &'r Mpz) -> *mut c_void`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]     Checking block-cipher v0.8.0
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking crypto-mac v0.9.1
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ajson v0.2.3
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking pem v0.8.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking dirs-next v1.0.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking mime_guess v2.0.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking color-backtrace v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.18.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=0d48f6a94af162ec -C extra-filename=-0d48f6a94af162ec --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-8cf43a02c2e23999.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-d7aa02586377abc4.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-1c346d37206c8b24.rmeta --cap-lints allow --cap-lints=forbid` (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" "2269bb7be8a94e761307fe87add00376afd7dcf099a17ea683229835a66d05d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2269bb7be8a94e761307fe87add00376afd7dcf099a17ea683229835a66d05d1", kill_on_drop: false }`
[INFO] [stdout] 2269bb7be8a94e761307fe87add00376afd7dcf099a17ea683229835a66d05d1