[INFO] fetching crate bex 0.1.5...
[INFO] checking bex-0.1.5 against 1.55.0 for beta-1.56-3
[INFO] extracting crate bex 0.1.5 into /workspace/builds/worker-99/source
[INFO] validating manifest of crates.io crate bex 0.1.5 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bex 0.1.5
[INFO] finished tweaking crates.io crate bex 0.1.5
[INFO] tweaked toml for crates.io crate bex 0.1.5 written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] crate crates.io crate bex 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ahash v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbd4a25dedffea5ce97856239fe8f227926b9152251dda8f6bb9ff6e2971ab11
[INFO] running `Command { std: "docker" "start" "-a" "dbd4a25dedffea5ce97856239fe8f227926b9152251dda8f6bb9ff6e2971ab11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbd4a25dedffea5ce97856239fe8f227926b9152251dda8f6bb9ff6e2971ab11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbd4a25dedffea5ce97856239fe8f227926b9152251dda8f6bb9ff6e2971ab11", kill_on_drop: false }`
[INFO] [stdout] dbd4a25dedffea5ce97856239fe8f227926b9152251dda8f6bb9ff6e2971ab11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a62f6c5e553a620cedb7770875c3b44ae60fa5cdfd83f8ab966f1c4afc9080b
[INFO] running `Command { std: "docker" "start" "-a" "4a62f6c5e553a620cedb7770875c3b44ae60fa5cdfd83f8ab966f1c4afc9080b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking bex v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `is_var`
[INFO] [stdout]   --> src/swap.rs:79:6
[INFO] [stdout]    |
[INFO] [stdout] 79 |   fn is_var(&self)->bool { self.v.is_var() && self.hi == XID_I && self.lo == XID_O }}
[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: `swap`
[INFO] [stdout]    --> src/swap.rs:397:6
[INFO] [stdout]     |
[INFO] [stdout] 397 |   fn swap(&mut self, vu:VID) {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `XSDebug`
[INFO] [stdout]     --> src/swap.rs:1052:8
[INFO] [stdout]      |
[INFO] [stdout] 1052 | struct XSDebug {
[INFO] [stdout]      |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]     --> src/swap.rs:1059:10
[INFO] [stdout]      |
[INFO] [stdout] 1059 |   pub fn new(vars:&str)->Self {
[INFO] [stdout]      |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `var`
[INFO] [stdout]     --> src/swap.rs:1065:6
[INFO] [stdout]      |
[INFO] [stdout] 1065 |   fn var(&mut self, i:usize, c:char) {
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `vids`
[INFO] [stdout]     --> src/swap.rs:1068:6
[INFO] [stdout]      |
[INFO] [stdout] 1068 |   fn vids(&self)->String { self.xs.vids.iter().map(|v| *self.vc.get(v).unwrap()).collect() }
[INFO] [stdout]      |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name_var`
[INFO] [stdout]     --> src/swap.rs:1069:6
[INFO] [stdout]      |
[INFO] [stdout] 1069 |   fn name_var(&mut self, v:VID, c:char) { self.vc.insert(v, c); self.cv.insert(c, v); }
[INFO] [stdout]      |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]     --> src/swap.rs:1070:6
[INFO] [stdout]      |
[INFO] [stdout] 1070 |   fn pop(&mut self)->XID { self.ds.pop().expect("stack underflow") }
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `xid`
[INFO] [stdout]     --> src/swap.rs:1071:6
[INFO] [stdout]      |
[INFO] [stdout] 1071 |   fn xid(&mut self, s:&str)->XID { self.run(s); self.pop() }
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `vid`
[INFO] [stdout]     --> src/swap.rs:1072:6
[INFO] [stdout]      |
[INFO] [stdout] 1072 |   fn vid(&self, c:char)->VID { *self.cv.get(&c).unwrap() }
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]     --> src/swap.rs:1073:6
[INFO] [stdout]      |
[INFO] [stdout] 1073 |   fn run(&mut self, s:&str)->String {
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ite`
[INFO] [stdout]     --> src/swap.rs:1095:6
[INFO] [stdout]      |
[INFO] [stdout] 1095 |   fn ite(&mut self, vx:XID, hi:XID, lo:XID)->XID {
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fmt`
[INFO] [stdout]     --> src/swap.rs:1101:6
[INFO] [stdout]      |
[INFO] [stdout] 1101 |   fn fmt(&self, x:XID)->String {
[INFO] [stdout]      |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `X32`, `X64`, `find_factors`, `swap::SwapSolver`
[INFO] [stdout]     --> examples/solve/bdd-solve.rs:1321:11
[INFO] [stdout]      |
[INFO] [stdout] 1321 | use bex::{swap::SwapSolver, find_factors, int::{X32, X64}};
[INFO] [stdout]      |           ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^        ^^^  ^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bex::reg::Reg`
[INFO] [stdout]     --> examples/solve/bdd-solve.rs:1322:5
[INFO] [stdout]      |
[INFO] [stdout] 1322 | use bex::reg::Reg;
[INFO] [stdout]      |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hashbrown::HashSet`
[INFO] [stdout]     --> examples/solve/bdd-solve.rs:1323:5
[INFO] [stdout]      |
[INFO] [stdout] 1323 | use hashbrown::HashSet;
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Reg` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     find_factors!(BDD, X4, X8, 210, vec![(14,15)]); }); }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use bex::reg::Reg;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     find_factors!(BDD, X4, X8, 210, vec![(14,15)]); }); }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::collections::HashSet;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Reg` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     find_factors!(BDD, X4, X8, 210, vec![(14,15)]); }); }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use bex::reg::Reg;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     find_factors!(BDD, X4, X8, 210, vec![(14,15)]); }); }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::collections::HashSet;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     find_factors!(BDD, X4, X8, 210, vec![(14,15)]); }); }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::collections::HashSet;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Reg` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     find_factors!(BDD, X8, X16, 210, expected);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use bex::reg::Reg;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     find_factors!(BDD, X8, X16, 210, expected);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::collections::HashSet;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Reg` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     find_factors!(BDD, X8, X16, 210, expected);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use bex::reg::Reg;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     find_factors!(BDD, X8, X16, 210, expected);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::collections::HashSet;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]   --> benches/bench-solve.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     find_factors!(BDD, X8, X16, 210, expected);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use std::collections::HashSet;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `BDDBase` in the current scope
[INFO] [stdout]   --> benches/bench-solve.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     find_factors!(BDD, X4, X8, 210, vec![(14,15)]); }); }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `BDDBase`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 3  | use bex::Base;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `BDDBase` in the current scope
[INFO] [stdout]   --> benches/bench-solve.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     find_factors!(BDD, X8, X16, 210, expected);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `BDDBase`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in the macro `find_factors` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 3  | use bex::Base;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bex` due to 13 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4a62f6c5e553a620cedb7770875c3b44ae60fa5cdfd83f8ab966f1c4afc9080b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a62f6c5e553a620cedb7770875c3b44ae60fa5cdfd83f8ab966f1c4afc9080b", kill_on_drop: false }`
[INFO] [stdout] 4a62f6c5e553a620cedb7770875c3b44ae60fa5cdfd83f8ab966f1c4afc9080b
