[INFO] cloning repository https://github.com/Basharkhan7776/rustling
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Basharkhan7776/rustling" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBasharkhan7776%2Frustling", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBasharkhan7776%2Frustling'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d44c53635b386e70e4ea5b9707f4799b62141e70
[INFO] checking Basharkhan7776/rustling against master#ab1d2444533d829e2d5cff6634cd3c70de6d7103 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBasharkhan7776%2Frustling" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Basharkhan7776/rustling
[INFO] finished tweaking git repo https://github.com/Basharkhan7776/rustling
[INFO] tweaked toml for git repo https://github.com/Basharkhan7776/rustling written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Basharkhan7776/rustling on toolchain ab1d2444533d829e2d5cff6634cd3c70de6d7103
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Basharkhan7776/rustling already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be9f075fd6d82a8538190a60bdcbd778d7a46fe8942a7c7a1f2cf9bde5199727
[INFO] running `Command { std: "docker" "start" "-a" "be9f075fd6d82a8538190a60bdcbd778d7a46fe8942a7c7a1f2cf9bde5199727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be9f075fd6d82a8538190a60bdcbd778d7a46fe8942a7c7a1f2cf9bde5199727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be9f075fd6d82a8538190a60bdcbd778d7a46fe8942a7c7a1f2cf9bde5199727", kill_on_drop: false }`
[INFO] [stdout] be9f075fd6d82a8538190a60bdcbd778d7a46fe8942a7c7a1f2cf9bde5199727
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41e0c1134dee36ee2ad967e0512fa4af8054961519168efe7335742b5d97901f
[INFO] running `Command { std: "docker" "start" "-a" "41e0c1134dee36ee2ad967e0512fa4af8054961519168efe7335742b5d97901f", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `exercises` (bin "move_semantics3") due to 1 previous error
[INFO] [stdout] error[E0596]: cannot borrow `vec` as mutable, as it is not declared as mutable
[INFO] [stdout]  --> exercises/06_move_semantics/move_semantics3.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     vec.push(88);
[INFO] [stdout]   |     ^^^ cannot borrow as mutable
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `,`, `:`, or `}`, found `!`
[INFO] [stdout]   --> exercises/12_options/options2.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |         word = optional_target {
[INFO] [stdout]    |                --------------- while parsing this struct
[INFO] [stdout] 14 |             assert_eq!(word, target);
[INFO] [stdout]    |             ---------^ expected one of `,`, `:`, or `}`
[INFO] [stdout]    |             |
[INFO] [stdout]    |             while parsing this struct field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `,`, `:`, or `}`, found `)`
[INFO] [stdout]   --> exercises/12_options/options2.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 13 |         word = optional_target {
[INFO] [stdout]    |                --------------- while parsing this struct
[INFO] [stdout] 14 |             assert_eq!(word, target);
[INFO] [stdout]    |                                    ^ expected one of `,`, `:`, or `}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `{`
[INFO] [stdout]   --> exercises/12_options/options2.rs:32:43
[INFO] [stdout]    |
[INFO] [stdout] 32 |         integer = optional_integers.pop() {
[INFO] [stdout]    |                                           ^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `word` in this scope
[INFO] [stdout]   --> exercises/12_options/options2.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         word = optional_target {
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to introduce a new binding
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let word = optional_target {
[INFO] [stdout]    |         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0574]: expected struct, variant or union type, found local variable `optional_target`
[INFO] [stdout]   --> exercises/12_options/options2.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         word = optional_target {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^ not a struct, variant or union type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `green` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 |         assert_eq!(green.red, 0);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `green` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 25 |         assert_eq!(green.green, 255);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `green` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |         assert_eq!(green.blue, 0);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `green` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 |         assert_eq!(green.0, 0);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `green` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:35:20
[INFO] [stdout]    |
[INFO] [stdout] 35 |         assert_eq!(green.1, 255);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `green` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:36:20
[INFO] [stdout]    |
[INFO] [stdout] 36 |         assert_eq!(green.2, 0);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `unit_struct` in this scope
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:43:33
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let message = format!("{unit_struct:?}s are fun!");
[INFO] [stdout]    |                                 ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Vec<_>`
[INFO] [stdout]  --> exercises/14_generics/generics1.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut numbers = Vec::new();
[INFO] [stdout]   |         ^^^^^^^^^^^   ---------- type must be known at this point
[INFO] [stdout]   |
[INFO] [stdout] help: consider giving `numbers` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut numbers: Vec<T> = Vec::new();
[INFO] [stdout]   |                    ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `,`, `:`, or `}`, found `!`
[INFO] [stdout]   --> exercises/12_options/options2.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |         word = optional_target {
[INFO] [stdout]    |                --------------- while parsing this struct
[INFO] [stdout] 14 |             assert_eq!(word, target);
[INFO] [stdout]    |             ---------^ expected one of `,`, `:`, or `}`
[INFO] [stdout]    |             |
[INFO] [stdout]    |             while parsing this struct field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `,`, `:`, or `}`, found `)`
[INFO] [stdout]   --> exercises/12_options/options2.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 13 |         word = optional_target {
[INFO] [stdout]    |                --------------- while parsing this struct
[INFO] [stdout] 14 |             assert_eq!(word, target);
[INFO] [stdout]    |                                    ^ expected one of `,`, `:`, or `}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `{`
[INFO] [stdout]   --> exercises/12_options/options2.rs:32:43
[INFO] [stdout]    |
[INFO] [stdout] 32 |         integer = optional_integers.pop() {
[INFO] [stdout]    |                                           ^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> exercises/07_structs/structs1.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0574.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `vec` as mutable, as it is not declared as mutable
[INFO] [stdout]  --> exercises/06_move_semantics/move_semantics1.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vec.push(88);
[INFO] [stdout]   |     ^^^ cannot borrow as mutable
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut vec = vec;
[INFO] [stdout]   |         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "options2" test) due to 5 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "options2") due to 3 previous errors
[INFO] [stderr] error: could not compile `exercises` (bin "structs1" test) due to 7 previous errors; 1 warning emitted
[INFO] [stderr] error: could not compile `exercises` (bin "move_semantics1") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "generics1") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "41e0c1134dee36ee2ad967e0512fa4af8054961519168efe7335742b5d97901f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41e0c1134dee36ee2ad967e0512fa4af8054961519168efe7335742b5d97901f", kill_on_drop: false }`
[INFO] [stdout] 41e0c1134dee36ee2ad967e0512fa4af8054961519168efe7335742b5d97901f
