[INFO] cloning repository https://github.com/johnterickson/smt_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnterickson/smt_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Fsmt_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Fsmt_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fd176639fb67b95b8a98c6e274d577f3555d2c1
[INFO] testing johnterickson/smt_rs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Fsmt_rs" "/workspace/builds/worker-65/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-65/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnterickson/smt_rs 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 git repo https://github.com/johnterickson/smt_rs
[INFO] finished tweaking git repo https://github.com/johnterickson/smt_rs
[INFO] tweaked toml for git repo https://github.com/johnterickson/smt_rs written to /workspace/builds/worker-65/source/Cargo.toml
[INFO] crate git repo https://github.com/johnterickson/smt_rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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] c7f15d3e665c51830c6d6214b1c1d401b70f56faa8204b491558fa0e1ed84f84
[INFO] running `Command { std: "docker" "start" "-a" "c7f15d3e665c51830c6d6214b1c1d401b70f56faa8204b491558fa0e1ed84f84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7f15d3e665c51830c6d6214b1c1d401b70f56faa8204b491558fa0e1ed84f84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7f15d3e665c51830c6d6214b1c1d401b70f56faa8204b491558fa0e1ed84f84", kill_on_drop: false }`
[INFO] [stdout] c7f15d3e665c51830c6d6214b1c1d401b70f56faa8204b491558fa0e1ed84f84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b4fbcee4a861b2dcea651df7563dcca97876e8e456eb2b190ca17ccbdd5ec05
[INFO] running `Command { std: "docker" "start" "-a" "8b4fbcee4a861b2dcea651df7563dcca97876e8e456eb2b190ca17ccbdd5ec05", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling smt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Constant`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Constant(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Implies`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Implies(Box<Expression>, Box<Expression>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Equivalent`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Equivalent(Box<Expression>, Box<Expression>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_inner`
[INFO] [stdout]   --> src/main.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn parse_inner(tokens: &mut Split<char>) -> Expression {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/main.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn parse(s: &str) -> Expression {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval`
[INFO] [stdout]    --> src/main.rs:519:8
[INFO] [stdout]     |
[INFO] [stdout] 519 |     fn eval(&self, values: &HashMap<u16, bool>) -> bool {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_solved`
[INFO] [stdout]    --> src/main.rs:548:8
[INFO] [stdout]     |
[INFO] [stdout] 548 |     fn is_solved(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/main.rs:442:57
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Expression::Or(_) => Cnf([self.to_clause()].into_iter().cloned().collect()),
[INFO] [stdout]     |                                                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Expression::Or(_) => Cnf([self.to_clause()].iter().cloned().collect()),
[INFO] [stdout]     |                                                         ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Expression::Or(_) => Cnf(IntoIterator::into_iter([self.to_clause()]).cloned().collect()),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/main.rs:591:9
[INFO] [stdout]     |
[INFO] [stdout] 591 |     let N = 2;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.48s
[INFO] running `Command { std: "docker" "inspect" "8b4fbcee4a861b2dcea651df7563dcca97876e8e456eb2b190ca17ccbdd5ec05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4fbcee4a861b2dcea651df7563dcca97876e8e456eb2b190ca17ccbdd5ec05", kill_on_drop: false }`
[INFO] [stdout] 8b4fbcee4a861b2dcea651df7563dcca97876e8e456eb2b190ca17ccbdd5ec05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e3cf6db9a5f2ee2a531f00b204fa798542adb41cdef0f62408f93b740454b59
[INFO] running `Command { std: "docker" "start" "-a" "0e3cf6db9a5f2ee2a531f00b204fa798542adb41cdef0f62408f93b740454b59", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling smt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `eval`
[INFO] [stdout]    --> src/main.rs:519:8
[INFO] [stdout]     |
[INFO] [stdout] 519 |     fn eval(&self, values: &HashMap<u16, bool>) -> bool {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/main.rs:442:57
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Expression::Or(_) => Cnf([self.to_clause()].into_iter().cloned().collect()),
[INFO] [stdout]     |                                                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Expression::Or(_) => Cnf([self.to_clause()].iter().cloned().collect()),
[INFO] [stdout]     |                                                         ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Expression::Or(_) => Cnf(IntoIterator::into_iter([self.to_clause()]).cloned().collect()),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]    --> src/main.rs:591:9
[INFO] [stdout]     |
[INFO] [stdout] 591 |     let N = 2;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.90s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0e3cf6db9a5f2ee2a531f00b204fa798542adb41cdef0f62408f93b740454b59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3cf6db9a5f2ee2a531f00b204fa798542adb41cdef0f62408f93b740454b59", kill_on_drop: false }`
[INFO] [stdout] 0e3cf6db9a5f2ee2a531f00b204fa798542adb41cdef0f62408f93b740454b59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ef2a0b479a8e0a30421543c0bbc94123ae7092f532abb887a7a078a0bf91d8c4
[INFO] running `Command { std: "docker" "start" "-a" "ef2a0b479a8e0a30421543c0bbc94123ae7092f532abb887a7a078a0bf91d8c4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `eval`
[INFO] [stderr]    --> src/main.rs:519:8
[INFO] [stderr]     |
[INFO] [stderr] 519 |     fn eval(&self, values: &HashMap<u16, bool>) -> bool {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stderr]    --> src/main.rs:442:57
[INFO] [stderr]     |
[INFO] [stderr] 442 |             Expression::Or(_) => Cnf([self.to_clause()].into_iter().cloned().collect()),
[INFO] [stderr]     |                                                         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 442 |             Expression::Or(_) => Cnf([self.to_clause()].iter().cloned().collect()),
[INFO] [stderr]     |                                                         ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 442 |             Expression::Or(_) => Cnf(IntoIterator::into_iter([self.to_clause()]).cloned().collect()),
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^                  ^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]    --> src/main.rs:591:9
[INFO] [stderr]     |
[INFO] [stderr] 591 |     let N = 2;
[INFO] [stderr]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `smt` (bin "smt" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.87s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/smt-6a0fd9ea74ca099e)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::equivalence ... ok
[INFO] [stdout] test tests::implies ... ok
[INFO] [stdout] test tests::sort ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ef2a0b479a8e0a30421543c0bbc94123ae7092f532abb887a7a078a0bf91d8c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2a0b479a8e0a30421543c0bbc94123ae7092f532abb887a7a078a0bf91d8c4", kill_on_drop: false }`
[INFO] [stdout] ef2a0b479a8e0a30421543c0bbc94123ae7092f532abb887a7a078a0bf91d8c4