[INFO] cloning repository https://github.com/Madoshakalaka/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Madoshakalaka/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadoshakalaka%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadoshakalaka%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2bed6fec68756528fe166cb0ad6a0e198b1d515b
[INFO] testing Madoshakalaka/rust_practice against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadoshakalaka%2Frust_practice" "/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/Madoshakalaka/rust_practice on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Madoshakalaka/rust_practice
[INFO] finished tweaking git repo https://github.com/Madoshakalaka/rust_practice
[INFO] tweaked toml for git repo https://github.com/Madoshakalaka/rust_practice written to /workspace/builds/worker-65/source/Cargo.toml
[INFO] crate git repo https://github.com/Madoshakalaka/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--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-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 477c39cd6aa08a8703f12482974256ded1c67419c2b0f0b32fac3767585e8053
[INFO] running `Command { std: "docker" "start" "-a" "477c39cd6aa08a8703f12482974256ded1c67419c2b0f0b32fac3767585e8053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "477c39cd6aa08a8703f12482974256ded1c67419c2b0f0b32fac3767585e8053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "477c39cd6aa08a8703f12482974256ded1c67419c2b0f0b32fac3767585e8053", kill_on_drop: false }`
[INFO] [stdout] 477c39cd6aa08a8703f12482974256ded1c67419c2b0f0b32fac3767585e8053
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d65652dd22d31da7db41d0dd4a224d675ac3b947465ee22fda2f4ac978590720
[INFO] running `Command { std: "docker" "start" "-a" "d65652dd22d31da7db41d0dd4a224d675ac3b947465ee22fda2f4ac978590720", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `:`, `@`, or `|`, found `,`
[INFO] [stdout]   --> src/algebra/expression.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn _build(&self, root ,current:&mut PrefixExpression, placeheld_count:usize){
[INFO] [stdout]    |                           ^ expected one of `:`, `@`, or `|`
[INFO] [stdout]    |
[INFO] [stdout]    = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
[INFO] [stdout] help: if this is a parameter name, give it a type
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn _build(&self, root: TypeName ,current:&mut PrefixExpression, placeheld_count:usize){
[INFO] [stdout]    |                          ++++++++++
[INFO] [stdout] help: if this is a type, explicitly ignore the parameter name
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn _build(&self, _: root ,current:&mut PrefixExpression, placeheld_count:usize){
[INFO] [stdout]    |                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/algebra/expression.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |           todo!("finish this, every else case recurses into 3 cases: both operator / diff ");
[INFO] [stdout]    |           ---------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 57 | 
[INFO] [stdout] 58 | /         if placeheld_count == self.op_len {
[INFO] [stdout] 59 | |             let clone = current.clone();
[INFO] [stdout] 60 | |
[INFO] [stdout] 61 | |             current.first = Operand::Number(None);
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |
[INFO] [stdout] 70 | |         }
[INFO] [stdout]    | |_________^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `expression_placeholder` on type `&HomonumericalPrefixExpressionGroup<'a>`
[INFO] [stdout]   --> src/algebra/expression.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |             if self.expression_placeholder{
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^ help: a field with a similar name exists: `expression_placeholders`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_practice` due to 4 previous errors; 1 warning emitted
[INFO] [stdout] error[E0277]: the trait bound `Operator: Clone` is not satisfied
[INFO] [stdout]   --> src/algebra/expression.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | #[derive(Clone)]
[INFO] [stdout]    |          ----- in this derive macro expansion
[INFO] [stdout] 21 | struct PrefixExpression {
[INFO] [stdout] 22 |     operator: Operator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `Operator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0609.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d65652dd22d31da7db41d0dd4a224d675ac3b947465ee22fda2f4ac978590720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d65652dd22d31da7db41d0dd4a224d675ac3b947465ee22fda2f4ac978590720", kill_on_drop: false }`
[INFO] [stdout] d65652dd22d31da7db41d0dd4a224d675ac3b947465ee22fda2f4ac978590720