[INFO] updating cached repository https://github.com/sagaban/rust-by-example [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] 2d7f259cdc0f6ca066acfa22d49b7a66667afd24 [INFO] checking sagaban/rust-by-example against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagaban%2Frust-by-example" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sagaban/rust-by-example on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368 [INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/sagaban/rust-by-example [INFO] finished tweaking git repo https://github.com/sagaban/rust-by-example [INFO] tweaked toml for git repo https://github.com/sagaban/rust-by-example written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/sagaban/rust-by-example already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+13f916f63bc6575d5ff1f989237dfabe88981368" "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] d6d9d864a51d32b70a0e87b6b1dbf1df3b2b0dc4072f0ce156218bb2c45e51d3 [INFO] running `"docker" "start" "-a" "d6d9d864a51d32b70a0e87b6b1dbf1df3b2b0dc4072f0ce156218bb2c45e51d3"` [INFO] [stderr] Checking rust-by-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `logical` [INFO] [stderr] --> src/chapters/c02.rs:25:7 [INFO] [stderr] | [INFO] [stderr] 25 | let logical: bool = true; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_logical` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a_float` [INFO] [stderr] --> src/chapters/c02.rs:27:7 [INFO] [stderr] | [INFO] [stderr] 27 | let a_float: f64 = 1.0; // Regular annotation [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_a_float` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `an_integer` [INFO] [stderr] --> src/chapters/c02.rs:28:7 [INFO] [stderr] | [INFO] [stderr] 28 | let an_integer = 5i32; // Suffix annotation [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_an_integer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `default_float` [INFO] [stderr] --> src/chapters/c02.rs:31:7 [INFO] [stderr] | [INFO] [stderr] 31 | let default_float = 3.0; // `f64` [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_default_float` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `default_integer` [INFO] [stderr] --> src/chapters/c02.rs:32:7 [INFO] [stderr] | [INFO] [stderr] 32 | let default_integer = 7; // `i32` [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_default_integer` [INFO] [stderr] [INFO] [stderr] warning: variable `inferred_type` is assigned to, but never used [INFO] [stderr] --> src/chapters/c02.rs:35:11 [INFO] [stderr] | [INFO] [stderr] 35 | let mut inferred_type = 12; // Type i64 is inferred from another line [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_inferred_type` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `inferred_type` is never read [INFO] [stderr] --> src/chapters/c02.rs:36:3 [INFO] [stderr] | [INFO] [stderr] 36 | inferred_type = 4294967296i64; [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: variable `mutable` is assigned to, but never used [INFO] [stderr] --> src/chapters/c02.rs:39:11 [INFO] [stderr] | [INFO] [stderr] 39 | let mut mutable = 12; // Mutable `i32` [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable` is never read [INFO] [stderr] --> src/chapters/c02.rs:40:3 [INFO] [stderr] | [INFO] [stderr] 40 | mutable = 21; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `mutable` [INFO] [stderr] --> src/chapters/c02.rs:46:7 [INFO] [stderr] | [INFO] [stderr] 46 | let mutable = true; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_mutable` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `logical` [INFO] [stderr] --> src/chapters/c02.rs:25:7 [INFO] [stderr] | [INFO] [stderr] 25 | let logical: bool = true; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_logical` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a_float` [INFO] [stderr] --> src/chapters/c02.rs:27:7 [INFO] [stderr] | [INFO] [stderr] 27 | let a_float: f64 = 1.0; // Regular annotation [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_a_float` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `an_integer` [INFO] [stderr] --> src/chapters/c02.rs:28:7 [INFO] [stderr] | [INFO] [stderr] 28 | let an_integer = 5i32; // Suffix annotation [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_an_integer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `default_float` [INFO] [stderr] --> src/chapters/c02.rs:31:7 [INFO] [stderr] | [INFO] [stderr] 31 | let default_float = 3.0; // `f64` [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_default_float` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `default_integer` [INFO] [stderr] --> src/chapters/c02.rs:32:7 [INFO] [stderr] | [INFO] [stderr] 32 | let default_integer = 7; // `i32` [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_default_integer` [INFO] [stderr] [INFO] [stderr] warning: variable `inferred_type` is assigned to, but never used [INFO] [stderr] --> src/chapters/c02.rs:35:11 [INFO] [stderr] | [INFO] [stderr] 35 | let mut inferred_type = 12; // Type i64 is inferred from another line [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_inferred_type` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `inferred_type` is never read [INFO] [stderr] --> src/chapters/c02.rs:36:3 [INFO] [stderr] | [INFO] [stderr] 36 | inferred_type = 4294967296i64; [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: variable `mutable` is assigned to, but never used [INFO] [stderr] --> src/chapters/c02.rs:39:11 [INFO] [stderr] | [INFO] [stderr] 39 | let mut mutable = 12; // Mutable `i32` [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable` is never read [INFO] [stderr] --> src/chapters/c02.rs:40:3 [INFO] [stderr] | [INFO] [stderr] 40 | mutable = 21; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `mutable` [INFO] [stderr] --> src/chapters/c02.rs:46:7 [INFO] [stderr] | [INFO] [stderr] 46 | let mutable = true; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_mutable` [INFO] [stderr] [INFO] [stderr] warning: function `c_liKe_enums` should have a snake case name [INFO] [stderr] --> src/chapters/c03.rs:281:8 [INFO] [stderr] | [INFO] [stderr] 281 | pub fn c_liKe_enums() { [INFO] [stderr] | ^^^^^^^^^^^^ help: convert the identifier to snake case: `c_li_ke_enums` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `c_liKe_enums` should have a snake case name [INFO] [stderr] --> src/chapters/c03.rs:281:8 [INFO] [stderr] | [INFO] [stderr] 281 | pub fn c_liKe_enums() { [INFO] [stderr] | ^^^^^^^^^^^^ help: convert the identifier to snake case: `c_li_ke_enums` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.97s [INFO] running `"docker" "inspect" "d6d9d864a51d32b70a0e87b6b1dbf1df3b2b0dc4072f0ce156218bb2c45e51d3"` [INFO] running `"docker" "rm" "-f" "d6d9d864a51d32b70a0e87b6b1dbf1df3b2b0dc4072f0ce156218bb2c45e51d3"` [INFO] [stdout] d6d9d864a51d32b70a0e87b6b1dbf1df3b2b0dc4072f0ce156218bb2c45e51d3