[INFO] fetching crate scryer-prolog 0.8.120...
[INFO] checking scryer-prolog-0.8.120 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate scryer-prolog 0.8.120 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate scryer-prolog 0.8.120 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate scryer-prolog 0.8.120
[INFO] finished tweaking crates.io crate scryer-prolog 0.8.120
[INFO] tweaked toml for crates.io crate scryer-prolog 0.8.120 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate scryer-prolog 0.8.120 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ce0debd68352d63339d60d9f34f951a29a73907d65ddb3c08d073535019e85e5
[INFO] running `"docker" "start" "-a" "ce0debd68352d63339d60d9f34f951a29a73907d65ddb3c08d073535019e85e5"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling rug v1.5.2
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.14
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling indexmap v1.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking ref_thread_local v0.0.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking stackvector v1.0.2
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]     Checking lexical-core v0.4.0
[INFO] [stderr]    Compiling scryer-prolog v0.8.120 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking unicode_reader v1.0.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking ordered-float v0.5.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking lexical v2.1.0
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.14
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking crossterm v0.16.0
[INFO] [stderr]    Compiling git-version-macro v0.3.4
[INFO] [stderr]     Checking git-version v0.3.4
[INFO] [stderr]     Checking rustyline v6.0.0
[INFO] [stderr]     Checking prolog_parser v0.8.51
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/prolog/heap_print.rs:452:13
[INFO] [stderr]     |
[INFO] [stderr] 452 |             (iter.next() == Some(']') && iter.next().is_none())
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/prolog/heap_print.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |             (iter.next() == Some('}') && iter.next().is_none())
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/prolog/heap_print.rs:452:13
[INFO] [stderr]     |
[INFO] [stderr] 452 |             (iter.next() == Some(']') && iter.next().is_none())
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/prolog/heap_print.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |             (iter.next() == Some('}') && iter.next().is_none())
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Binary`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Binary,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Error`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Error,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Reset`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Reset,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stdin`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Stdin,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TcpStream`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     TcpStream(TcpStream),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stdin`
[INFO] [stderr]    --> src/prolog/machine/streams.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 | /     pub(crate)
[INFO] [stderr] 196 | |     fn stdin() -> Self {
[INFO] [stderr] 197 | |         Stream {
[INFO] [stderr] 198 | |             options: StreamOptions::default(),
[INFO] [stderr] ...   |
[INFO] [stderr] 202 | |         }
[INFO] [stderr] 203 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]    --> src/prolog/machine/mod.rs:323:5
[INFO] [stderr]     |
[INFO] [stderr] 323 |     pub fn reset(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Binary`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Binary,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Error`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Error,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Reset`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Reset,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stdin`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Stdin,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TcpStream`
[INFO] [stderr]   --> src/prolog/machine/streams.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     TcpStream(TcpStream),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stdin`
[INFO] [stderr]    --> src/prolog/machine/streams.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 | /     pub(crate)
[INFO] [stderr] 196 | |     fn stdin() -> Self {
[INFO] [stderr] 197 | |         Stream {
[INFO] [stderr] 198 | |             options: StreamOptions::default(),
[INFO] [stderr] ...   |
[INFO] [stderr] 202 | |         }
[INFO] [stderr] 203 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 56s
[INFO] running `"docker" "inspect" "ce0debd68352d63339d60d9f34f951a29a73907d65ddb3c08d073535019e85e5"`
[INFO] running `"docker" "rm" "-f" "ce0debd68352d63339d60d9f34f951a29a73907d65ddb3c08d073535019e85e5"`
[INFO] [stdout] ce0debd68352d63339d60d9f34f951a29a73907d65ddb3c08d073535019e85e5