[INFO] updating cached repository https://github.com/kdnk/rust_introduction [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 4a644f9533c899940a70df93d978e23509f90120 [INFO] checking kdnk/rust_introduction against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnk%2Frust_introduction" "/workspace/builds/worker-11/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kdnk/rust_introduction on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 [INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/kdnk/rust_introduction [INFO] finished tweaking git repo https://github.com/kdnk/rust_introduction [INFO] tweaked toml for git repo https://github.com/kdnk/rust_introduction written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/kdnk/rust_introduction already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 983bc5d18c3b0fa7ce5b3a3d1c2a7eb8e8084e45b881ae7ce83bc180f900060b [INFO] running `"docker" "start" "-a" "983bc5d18c3b0fa7ce5b3a3d1c2a7eb8e8084e45b881ae7ce83bc180f900060b"` [INFO] [stderr] Checking rust_introduction v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error: couldn't read src/07_ownership/04_borrow.rs: No such file or directory (os error 2) [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: could not compile `rust_introduction`. [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] [stderr] error: couldn't read src/07_ownership/03_copy.rs: No such file or directory (os error 2) [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: could not compile `rust_introduction`. [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] [stderr] error: couldn't read src/07_ownership/01_value_ownership.rs: No such file or directory (os error 2) [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: could not compile `rust_introduction`. [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] [stderr] warning: struct is never constructed: `Polygon` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | struct Polygon { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Triangle` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:7:8 [INFO] [stderr] | [INFO] [stderr] 7 | struct Triangle(Vertex, Vertex, Vertex); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Vertex` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | struct Vertex(i32, i32); [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `UniqueValue` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:10:8 [INFO] [stderr] | [INFO] [stderr] 10 | struct UniqueValue; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: value passed to `n` is never read [INFO] [stderr] --> src/04_primitive/scalar.rs:5:11 [INFO] [stderr] | [INFO] [stderr] 5 | fn f1(mut n: u32) { [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Polygon` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | struct Polygon { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Triangle` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:7:8 [INFO] [stderr] | [INFO] [stderr] 7 | struct Triangle(Vertex, Vertex, Vertex); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Vertex` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | struct Vertex(i32, i32); [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `UniqueValue` [INFO] [stderr] --> src/05_user_defined_types/06_struct.rs:10:8 [INFO] [stderr] | [INFO] [stderr] 10 | struct UniqueValue; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `string` [INFO] [stderr] --> src/06_basic/02_match.rs:4:9 [INFO] [stderr] | [INFO] [stderr] 4 | let string = match unknown { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/08_trait/03_dispatch.rs:8:34 [INFO] [stderr] | [INFO] [stderr] 8 | ::to_string(t) [INFO] [stderr] | ^ [INFO] [stderr] | | [INFO] [stderr] | expected `&i32`, found `i32` [INFO] [stderr] | help: consider borrowing here: `&t` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0308`. [INFO] [stderr] error: could not compile `rust_introduction`. [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] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/05_user_defined_types/01_main_types.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let v1 = vec![false, true, false]; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v4` [INFO] [stderr] --> src/05_user_defined_types/01_main_types.rs:19:9 [INFO] [stderr] | [INFO] [stderr] 19 | let v4 = vec![vec!['a', 'b', 'c'], vec!['d']]; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v4` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/05_user_defined_types/02_string.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let mut s3 = "ストロベリー".to_owned(); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/08_trait/03_dispatch.rs:8:34 [INFO] [stderr] | [INFO] [stderr] 8 | ::to_string(t) [INFO] [stderr] | ^ [INFO] [stderr] | | [INFO] [stderr] | expected `&i32`, found `i32` [INFO] [stderr] | help: consider borrowing here: `&t` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0308`. [INFO] [stderr] error: could not compile `rust_introduction`. [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] [stderr] error: build failed [INFO] running `"docker" "inspect" "983bc5d18c3b0fa7ce5b3a3d1c2a7eb8e8084e45b881ae7ce83bc180f900060b"` [INFO] running `"docker" "rm" "-f" "983bc5d18c3b0fa7ce5b3a3d1c2a7eb8e8084e45b881ae7ce83bc180f900060b"` [INFO] [stdout] 983bc5d18c3b0fa7ce5b3a3d1c2a7eb8e8084e45b881ae7ce83bc180f900060b