[INFO] cloning repository https://github.com/sagaban/rust-by-example [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sagaban/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagaban%2Frust-by-example", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagaban%2Frust-by-example'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2d7f259cdc0f6ca066acfa22d49b7a66667afd24 [INFO] checking sagaban/rust-by-example against try#15e8bc6907ab2b3623cb52acc726f4787458df64 for pr-141352 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsagaban%2Frust-by-example" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sagaban/rust-by-example on toolchain 15e8bc6907ab2b3623cb52acc726f4787458df64 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-4-tc2/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 `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c8e4fc7731bddd7fc660c758fa66158b4aba0d32578dc56e8117507a3fe94c4a [INFO] running `Command { std: "docker" "start" "-a" "c8e4fc7731bddd7fc660c758fa66158b4aba0d32578dc56e8117507a3fe94c4a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c8e4fc7731bddd7fc660c758fa66158b4aba0d32578dc56e8117507a3fe94c4a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8e4fc7731bddd7fc660c758fa66158b4aba0d32578dc56e8117507a3fe94c4a", kill_on_drop: false }` [INFO] [stdout] c8e4fc7731bddd7fc660c758fa66158b4aba0d32578dc56e8117507a3fe94c4a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 784760a02c21712c47b5dba8c0c5725539bc2ed937229d2972b811976ea7e099 [INFO] running `Command { std: "docker" "start" "-a" "784760a02c21712c47b5dba8c0c5725539bc2ed937229d2972b811976ea7e099", kill_on_drop: false }` [INFO] [stderr] Checking rust-by-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `logical` [INFO] [stdout] --> src/chapters/c02.rs:25:7 [INFO] [stdout] | [INFO] [stdout] 25 | let logical: bool = true; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_float` [INFO] [stdout] --> src/chapters/c02.rs:27:7 [INFO] [stdout] | [INFO] [stdout] 27 | let a_float: f64 = 1.0; // Regular annotation [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `an_integer` [INFO] [stdout] --> src/chapters/c02.rs:28:7 [INFO] [stdout] | [INFO] [stdout] 28 | let an_integer = 5i32; // Suffix annotation [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `default_float` [INFO] [stdout] --> src/chapters/c02.rs:31:7 [INFO] [stdout] | [INFO] [stdout] 31 | let default_float = 3.0; // `f64` [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `default_integer` [INFO] [stdout] --> src/chapters/c02.rs:32:7 [INFO] [stdout] | [INFO] [stdout] 32 | let default_integer = 7; // `i32` [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `logical` [INFO] [stdout] --> src/chapters/c02.rs:25:7 [INFO] [stdout] | [INFO] [stdout] 25 | let logical: bool = true; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used [INFO] [stdout] --> src/chapters/c02.rs:35:11 [INFO] [stdout] | [INFO] [stdout] 35 | let mut inferred_type = 12; // Type i64 is inferred from another line [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_inferred_type` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `inferred_type` is never read [INFO] [stdout] --> src/chapters/c02.rs:36:3 [INFO] [stdout] | [INFO] [stdout] 36 | inferred_type = 4294967296i64; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_float` [INFO] [stdout] --> src/chapters/c02.rs:27:7 [INFO] [stdout] | [INFO] [stdout] 27 | let a_float: f64 = 1.0; // Regular annotation [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `mutable` is assigned to, but never used [INFO] [stdout] --> src/chapters/c02.rs:39:11 [INFO] [stdout] | [INFO] [stdout] 39 | let mut mutable = 12; // Mutable `i32` [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_mutable` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `mutable` is never read [INFO] [stdout] --> src/chapters/c02.rs:40:3 [INFO] [stdout] | [INFO] [stdout] 40 | mutable = 21; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `an_integer` [INFO] [stdout] --> src/chapters/c02.rs:28:7 [INFO] [stdout] | [INFO] [stdout] 28 | let an_integer = 5i32; // Suffix annotation [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mutable` [INFO] [stdout] --> src/chapters/c02.rs:46:7 [INFO] [stdout] | [INFO] [stdout] 46 | let mutable = true; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `default_float` [INFO] [stdout] --> src/chapters/c02.rs:31:7 [INFO] [stdout] | [INFO] [stdout] 31 | let default_float = 3.0; // `f64` [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `default_integer` [INFO] [stdout] --> src/chapters/c02.rs:32:7 [INFO] [stdout] | [INFO] [stdout] 32 | let default_integer = 7; // `i32` [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used [INFO] [stdout] --> src/chapters/c02.rs:35:11 [INFO] [stdout] | [INFO] [stdout] 35 | let mut inferred_type = 12; // Type i64 is inferred from another line [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_inferred_type` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `inferred_type` is never read [INFO] [stdout] --> src/chapters/c02.rs:36:3 [INFO] [stdout] | [INFO] [stdout] 36 | inferred_type = 4294967296i64; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `mutable` is assigned to, but never used [INFO] [stdout] --> src/chapters/c02.rs:39:11 [INFO] [stdout] | [INFO] [stdout] 39 | let mut mutable = 12; // Mutable `i32` [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_mutable` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `mutable` is never read [INFO] [stdout] --> src/chapters/c02.rs:40:3 [INFO] [stdout] | [INFO] [stdout] 40 | mutable = 21; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mutable` [INFO] [stdout] --> src/chapters/c02.rs:46:7 [INFO] [stdout] | [INFO] [stdout] 46 | let mutable = true; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/chapters/c01.rs:45:20 [INFO] [stdout] | [INFO] [stdout] 45 | struct Structure(i32); [INFO] [stdout] | --------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `age` are never read [INFO] [stdout] --> src/chapters/c03.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 22 | struct Person<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 23 | // The 'a defines a lifetime [INFO] [stdout] 24 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 25 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Subtract` is never constructed [INFO] [stdout] --> src/chapters/c03.rs:220:5 [INFO] [stdout] | [INFO] [stdout] 218 | enum VeryVerboseEnumOfThingsToDoWithNumbers { [INFO] [stdout] | -------------------------------------- variant in this enum [INFO] [stdout] 219 | Add, [INFO] [stdout] 220 | Subtract, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `c_liKe_enums` should have a snake case name [INFO] [stdout] --> src/chapters/c03.rs:281:8 [INFO] [stdout] | [INFO] [stdout] 281 | pub fn c_liKe_enums() { [INFO] [stdout] | ^^^^^^^^^^^^ help: convert the identifier to snake case: `c_li_ke_enums` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/chapters/c01.rs:45:20 [INFO] [stdout] | [INFO] [stdout] 45 | struct Structure(i32); [INFO] [stdout] | --------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `age` are never read [INFO] [stdout] --> src/chapters/c03.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 22 | struct Person<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 23 | // The 'a defines a lifetime [INFO] [stdout] 24 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 25 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Subtract` is never constructed [INFO] [stdout] --> src/chapters/c03.rs:220:5 [INFO] [stdout] | [INFO] [stdout] 218 | enum VeryVerboseEnumOfThingsToDoWithNumbers { [INFO] [stdout] | -------------------------------------- variant in this enum [INFO] [stdout] 219 | Add, [INFO] [stdout] 220 | Subtract, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `c_liKe_enums` should have a snake case name [INFO] [stdout] --> src/chapters/c03.rs:281:8 [INFO] [stdout] | [INFO] [stdout] 281 | pub fn c_liKe_enums() { [INFO] [stdout] | ^^^^^^^^^^^^ help: convert the identifier to snake case: `c_li_ke_enums` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] running `Command { std: "docker" "inspect" "784760a02c21712c47b5dba8c0c5725539bc2ed937229d2972b811976ea7e099", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "784760a02c21712c47b5dba8c0c5725539bc2ed937229d2972b811976ea7e099", kill_on_drop: false }` [INFO] [stdout] 784760a02c21712c47b5dba8c0c5725539bc2ed937229d2972b811976ea7e099