[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] checking Madoshakalaka/rust_practice against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMadoshakalaka%2Frust_practice" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Madoshakalaka/rust_practice on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", 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-11/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" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", 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] 2e7815f694f3f744583d4a5d9bc6ce9bc3f44868d2ba989f742cbcb3637ae4a0
[INFO] running `Command { std: "docker" "start" "-a" "2e7815f694f3f744583d4a5d9bc6ce9bc3f44868d2ba989f742cbcb3637ae4a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e7815f694f3f744583d4a5d9bc6ce9bc3f44868d2ba989f742cbcb3637ae4a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7815f694f3f744583d4a5d9bc6ce9bc3f44868d2ba989f742cbcb3637ae4a0", kill_on_drop: false }`
[INFO] [stdout] 2e7815f694f3f744583d4a5d9bc6ce9bc3f44868d2ba989f742cbcb3637ae4a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 444d031f472330cdc1645cc6abe4bf824e80f5090bc40a53772d643373757727
[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" "444d031f472330cdc1645cc6abe4bf824e80f5090bc40a53772d643373757727", 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 memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking 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] 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] error[E0277]: the trait bound `Operator: Clone` is not satisfied
[INFO] [stdout]   --> src/algebra/expression.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     operator: Operator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `Operator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required by `clone`
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] [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] [stderr] error: could not compile `rust_practice`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: the trait bound `Operator: Clone` is not satisfied
[INFO] [stdout]   --> src/algebra/expression.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     operator: Operator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `Operator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required by `clone`
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] [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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "444d031f472330cdc1645cc6abe4bf824e80f5090bc40a53772d643373757727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "444d031f472330cdc1645cc6abe4bf824e80f5090bc40a53772d643373757727", kill_on_drop: false }`
[INFO] [stdout] 444d031f472330cdc1645cc6abe4bf824e80f5090bc40a53772d643373757727