[INFO] crate little 0.3.0 is already in cache [INFO] extracting crate little 0.3.0 into work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/little/0.3.0 [INFO] extracting crate little 0.3.0 into work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/little/0.3.0 [INFO] validating manifest of little-0.3.0 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of little-0.3.0 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing little-0.3.0 [INFO] finished frobbing little-0.3.0 [INFO] frobbed toml for little-0.3.0 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/little/0.3.0/Cargo.toml [INFO] started frobbing little-0.3.0 [INFO] finished frobbing little-0.3.0 [INFO] frobbed toml for little-0.3.0 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/little/0.3.0/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking little-0.3.0 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-3/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/little/0.3.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 0a924330f4e69684efd5b282cde57dd3590486794b03b53080522251b19f66dd [INFO] running `"docker" "start" "-a" "0a924330f4e69684efd5b282cde57dd3590486794b03b53080522251b19f66dd"` [INFO] [stderr] Checking little v0.3.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `BuildError` [INFO] [stderr] --> src/compiler.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | BuildError, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `BuildError` [INFO] [stderr] --> src/compiler.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | BuildError, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/lib.rs:14:22 [INFO] [stderr] | [INFO] [stderr] 14 | use std::io::{ self, Write }; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/interpreter.rs:4:16 [INFO] [stderr] | [INFO] [stderr] 4 | use std::io::{ Read, Write }; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `id` [INFO] [stderr] --> src/interpreter.rs:64:27 [INFO] [stderr] | [INFO] [stderr] 64 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_id` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `env` [INFO] [stderr] --> src/interpreter.rs:64:37 [INFO] [stderr] | [INFO] [stderr] 64 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_env` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `calls` [INFO] [stderr] --> src/interpreter.rs:64:55 [INFO] [stderr] | [INFO] [stderr] 64 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_calls` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/interpreter.rs:136:49 [INFO] [stderr] | [INFO] [stderr] 136 | Instruction::Property { mut name } => { [INFO] [stderr] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/interpreter.rs:267:30 [INFO] [stderr] | [INFO] [stderr] 267 | Mem::Parameter { name } => { [INFO] [stderr] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `id` [INFO] [stderr] --> src/compiler.rs:36:27 [INFO] [stderr] | [INFO] [stderr] 36 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_id` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `env` [INFO] [stderr] --> src/compiler.rs:36:37 [INFO] [stderr] | [INFO] [stderr] 36 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_env` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `calls` [INFO] [stderr] --> src/compiler.rs:36:55 [INFO] [stderr] | [INFO] [stderr] 36 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_calls` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buf` [INFO] [stderr] --> src/compiler.rs:68:24 [INFO] [stderr] | [INFO] [stderr] 68 | fn read(&mut self, buf: &mut [u8]) -> io::Result { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_buf` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `input` [INFO] [stderr] --> src/compiler.rs:80:29 [INFO] [stderr] | [INFO] [stderr] 80 | pub fn output(input: &mut I, output: &mut O) [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_input` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `output` [INFO] [stderr] --> src/compiler.rs:80:44 [INFO] [stderr] | [INFO] [stderr] 80 | pub fn output(input: &mut I, output: &mut O) [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_output` [INFO] [stderr] [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/lib.rs:14:22 [INFO] [stderr] | [INFO] [stderr] 14 | use std::io::{ self, Write }; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/interpreter.rs:4:16 [INFO] [stderr] | [INFO] [stderr] 4 | use std::io::{ Read, Write }; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `id` [INFO] [stderr] --> src/interpreter.rs:64:27 [INFO] [stderr] | [INFO] [stderr] 64 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_id` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `env` [INFO] [stderr] --> src/interpreter.rs:64:37 [INFO] [stderr] | [INFO] [stderr] 64 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_env` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `calls` [INFO] [stderr] --> src/interpreter.rs:64:55 [INFO] [stderr] | [INFO] [stderr] 64 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_calls` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/interpreter.rs:136:49 [INFO] [stderr] | [INFO] [stderr] 136 | Instruction::Property { mut name } => { [INFO] [stderr] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/interpreter.rs:267:30 [INFO] [stderr] | [INFO] [stderr] 267 | Mem::Parameter { name } => { [INFO] [stderr] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `id` [INFO] [stderr] --> src/compiler.rs:36:27 [INFO] [stderr] | [INFO] [stderr] 36 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_id` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `env` [INFO] [stderr] --> src/compiler.rs:36:37 [INFO] [stderr] | [INFO] [stderr] 36 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_env` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `calls` [INFO] [stderr] --> src/compiler.rs:36:55 [INFO] [stderr] | [INFO] [stderr] 36 | fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function + 'a)>) [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_calls` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buf` [INFO] [stderr] --> src/compiler.rs:68:24 [INFO] [stderr] | [INFO] [stderr] 68 | fn read(&mut self, buf: &mut [u8]) -> io::Result { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_buf` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `input` [INFO] [stderr] --> src/compiler.rs:80:29 [INFO] [stderr] | [INFO] [stderr] 80 | pub fn output(input: &mut I, output: &mut O) [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_input` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `output` [INFO] [stderr] --> src/compiler.rs:80:44 [INFO] [stderr] | [INFO] [stderr] 80 | pub fn output(input: &mut I, output: &mut O) [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_output` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `template_ooo` [INFO] [stderr] --> src/compiler.rs:77:5 [INFO] [stderr] | [INFO] [stderr] 77 | pub struct template_ooo; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `output` [INFO] [stderr] --> src/compiler.rs:80:9 [INFO] [stderr] | [INFO] [stderr] 80 | / pub fn output(input: &mut I, output: &mut O) [INFO] [stderr] 81 | | -> Result [INFO] [stderr] 82 | | where [INFO] [stderr] 83 | | I: io::Read + io::Seek, O: io::Write [INFO] [stderr] ... | [INFO] [stderr] 86 | | Ok(0) [INFO] [stderr] 87 | | } [INFO] [stderr] | |_________^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `template_ooo` [INFO] [stderr] --> src/compiler.rs:77:5 [INFO] [stderr] | [INFO] [stderr] 77 | pub struct template_ooo; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `output` [INFO] [stderr] --> src/compiler.rs:80:9 [INFO] [stderr] | [INFO] [stderr] 80 | / pub fn output(input: &mut I, output: &mut O) [INFO] [stderr] 81 | | -> Result [INFO] [stderr] 82 | | where [INFO] [stderr] 83 | | I: io::Read + io::Seek, O: io::Write [INFO] [stderr] ... | [INFO] [stderr] 86 | | Ok(0) [INFO] [stderr] 87 | | } [INFO] [stderr] | |_________^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> examples/hello_world.rs:4:22 [INFO] [stderr] | [INFO] [stderr] 4 | use std::io::{ Read, Write }; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> tests/compiler.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #[macro_use] extern crate log; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `output_param` [INFO] [stderr] --> tests/compiler.rs:16:1 [INFO] [stderr] | [INFO] [stderr] 16 | fn output_param() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.57s [INFO] running `"docker" "inspect" "0a924330f4e69684efd5b282cde57dd3590486794b03b53080522251b19f66dd"` [INFO] running `"docker" "rm" "-f" "0a924330f4e69684efd5b282cde57dd3590486794b03b53080522251b19f66dd"` [INFO] [stdout] 0a924330f4e69684efd5b282cde57dd3590486794b03b53080522251b19f66dd