[INFO] cloning repository https://github.com/shiyivei/rust-co-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shiyivei/rust-co-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshiyivei%2Frust-co-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshiyivei%2Frust-co-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95dac341fdb2fec94c02018bb8cc048260daddc1
[INFO] checking shiyivei/rust-co-learn against master#ac385a5af6d9fa8399a0cec799833cd28324abf8 for pr-125107
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshiyivei%2Frust-co-learn" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shiyivei/rust-co-learn on toolchain ac385a5af6d9fa8399a0cec799833cd28324abf8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shiyivei/rust-co-learn
[INFO] finished tweaking git repo https://github.com/shiyivei/rust-co-learn
[INFO] tweaked toml for git repo https://github.com/shiyivei/rust-co-learn written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shiyivei/rust-co-learn 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" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4aa30de95e99b105dabf0a96ab5ed123d2cc1967aa8fbf996a66f15d3eb53b7
[INFO] running `Command { std: "docker" "start" "-a" "f4aa30de95e99b105dabf0a96ab5ed123d2cc1967aa8fbf996a66f15d3eb53b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4aa30de95e99b105dabf0a96ab5ed123d2cc1967aa8fbf996a66f15d3eb53b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4aa30de95e99b105dabf0a96ab5ed123d2cc1967aa8fbf996a66f15d3eb53b7", kill_on_drop: false }`
[INFO] [stdout] f4aa30de95e99b105dabf0a96ab5ed123d2cc1967aa8fbf996a66f15d3eb53b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+ac385a5af6d9fa8399a0cec799833cd28324abf8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5678a8928b3876747717e3b235487b2a621b8e238081475de27d36c250b0229e
[INFO] running `Command { std: "docker" "start" "-a" "5678a8928b3876747717e3b235487b2a621b8e238081475de27d36c250b0229e", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking module-four v0.1.0 (/opt/rustwide/workdir/module-four)
[INFO] [stderr]     Checking module_one v0.1.0 (/opt/rustwide/workdir/module-one)
[INFO] [stderr]     Checking module-two v0.1.0 (/opt/rustwide/workdir/module-two)
[INFO] [stderr]     Checking module-three v0.1.0 (/opt/rustwide/workdir/module-three)
[INFO] [stderr]     Checking module-six v0.1.0 (/opt/rustwide/workdir/module-six)
[INFO] [stderr]     Checking module-five v0.1.0 (/opt/rustwide/workdir/module-five)
[INFO] [stdout] warning: function `doc_test` is never used
[INFO] [stdout]   --> module-four/src/project_tests/doc_test.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn doc_test() {}
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doc_test` is never used
[INFO] [stdout]   --> module-four/src/project_tests/doc_test.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn doc_test() {}
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> module-one/src/comment/comment.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> module-one/src/comment/comment.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> module-two/examples/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Animal` is never used
[INFO] [stdout]   --> module-two/examples/main.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 |     trait Animal {
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]   --> module-two/examples/main.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     struct Dog;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]   --> module-two/examples/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     struct Cat;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> module-three/examples/main.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let a: MyType<u32> = MyType::new();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `animal_speak` is never used
[INFO] [stdout]   --> module-two/examples/main.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn animal_speak(animal: &dyn Animal) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> module-two/examples/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> module-three/examples/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let b: MyType<String> = MyType::new();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> module-three/examples/main.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |             unsafe { &self.get_ref().data }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyType` is never constructed
[INFO] [stdout]   --> module-three/examples/main.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     struct MyType<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> module-three/examples/main.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     impl<T> MyType<T> {
[INFO] [stdout]    |     ----------------- associated function in this implementation
[INFO] [stdout] 15 |         fn new() -> MyType<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> module-three/examples/main.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]   --> module-four/examples/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn read_file(path: &str) -> Result<File, Error> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> module-four/examples/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> module-four/examples/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 32 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> module-four/examples/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 42 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/examples/main-fad8a7b18011d71e.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/module-four-fad8a7b18011d71e/dep-example-main`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "5678a8928b3876747717e3b235487b2a621b8e238081475de27d36c250b0229e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5678a8928b3876747717e3b235487b2a621b8e238081475de27d36c250b0229e", kill_on_drop: false }`
[INFO] [stdout] 5678a8928b3876747717e3b235487b2a621b8e238081475de27d36c250b0229e