[INFO] updating cached repository ConceptsDemo/rust-example [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/ConceptsDemo/rust-example [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/ConceptsDemo/rust-example" "work/ex/beta-1.38-1/sources/1.37.0/gh/ConceptsDemo/rust-example"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ConceptsDemo/rust-example'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ConceptsDemo/rust-example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ConceptsDemo/rust-example"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ConceptsDemo/rust-example'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8d400f89e275040a5947640679df9a477d368595 [INFO] sha for GitHub repo ConceptsDemo/rust-example: 8d400f89e275040a5947640679df9a477d368595 [INFO] validating manifest of ConceptsDemo/rust-example on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of ConceptsDemo/rust-example on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing ConceptsDemo/rust-example [INFO] finished frobbing ConceptsDemo/rust-example [INFO] frobbed toml for ConceptsDemo/rust-example written to work/ex/beta-1.38-1/sources/1.37.0/gh/ConceptsDemo/rust-example/Cargo.toml [INFO] started frobbing ConceptsDemo/rust-example [INFO] finished frobbing ConceptsDemo/rust-example [INFO] frobbed toml for ConceptsDemo/rust-example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ConceptsDemo/rust-example/Cargo.toml [INFO] crate ConceptsDemo/rust-example already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing ConceptsDemo/rust-example against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ConceptsDemo/rust-example:/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=warn" "-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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] db6d7b74af62c64fd1f6f8e13131d153228cef974596b20a48ed9a001b005246 [INFO] running `"docker" "start" "-a" "db6d7b74af62c64fd1f6f8e13131d153228cef974596b20a48ed9a001b005246"` [INFO] [stderr] Compiling rust-example v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused imports: `f32`, `i16`, `i64`, `u16`, `u64`, `u8`, `usize` [INFO] [stderr] --> src/main.rs:1:15 [INFO] [stderr] | [INFO] [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64, isize, usize}; [INFO] [stderr] | ^^^ ^^^ ^^ ^^^ ^^^ ^^^ ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `age` [INFO] [stderr] --> src/main.rs:7:13 [INFO] [stderr] | [INFO] [stderr] 7 | let mut age : u32 = 100; [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_age` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `count` [INFO] [stderr] --> src/main.rs:64:6 [INFO] [stderr] | [INFO] [stderr] 64 | let count = rand_string.chars().count(); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_count` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rand_tuple` [INFO] [stderr] --> src/main.rs:134:6 [INFO] [stderr] | [INFO] [stderr] 134 | let rand_tuple = ("Vancir", 30); [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_rand_tuple` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `quicksilver` [INFO] [stderr] --> src/main.rs:172:6 [INFO] [stderr] | [INFO] [stderr] 172 | let quicksilver = Hero::Fast; [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_quicksilver` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut age : u32 = 100; [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] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:18:6 [INFO] [stderr] | [INFO] [stderr] 18 | let mut var = -4i32; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:153:6 [INFO] [stderr] | [INFO] [stderr] 153 | let mut circle1 = Circle { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:166:6 [INFO] [stderr] | [INFO] [stderr] 166 | let mut rect1 = Rectangle { [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.97s [INFO] running `"docker" "inspect" "db6d7b74af62c64fd1f6f8e13131d153228cef974596b20a48ed9a001b005246"` [INFO] running `"docker" "rm" "-f" "db6d7b74af62c64fd1f6f8e13131d153228cef974596b20a48ed9a001b005246"` [INFO] [stdout] db6d7b74af62c64fd1f6f8e13131d153228cef974596b20a48ed9a001b005246 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ConceptsDemo/rust-example:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 5df0fda245ae250ed889abdd36b0f0d3c0d95c8232594a55e3937f8645a82d23 [INFO] running `"docker" "start" "-a" "5df0fda245ae250ed889abdd36b0f0d3c0d95c8232594a55e3937f8645a82d23"` [INFO] [stderr] Compiling rust-example v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused imports: `f32`, `i16`, `i64`, `u16`, `u64`, `u8`, `usize` [INFO] [stderr] --> src/main.rs:1:15 [INFO] [stderr] | [INFO] [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64, isize, usize}; [INFO] [stderr] | ^^^ ^^^ ^^ ^^^ ^^^ ^^^ ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `age` [INFO] [stderr] --> src/main.rs:7:13 [INFO] [stderr] | [INFO] [stderr] 7 | let mut age : u32 = 100; [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_age` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `count` [INFO] [stderr] --> src/main.rs:64:6 [INFO] [stderr] | [INFO] [stderr] 64 | let count = rand_string.chars().count(); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_count` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rand_tuple` [INFO] [stderr] --> src/main.rs:134:6 [INFO] [stderr] | [INFO] [stderr] 134 | let rand_tuple = ("Vancir", 30); [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_rand_tuple` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `quicksilver` [INFO] [stderr] --> src/main.rs:172:6 [INFO] [stderr] | [INFO] [stderr] 172 | let quicksilver = Hero::Fast; [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_quicksilver` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut age : u32 = 100; [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] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:18:6 [INFO] [stderr] | [INFO] [stderr] 18 | let mut var = -4i32; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:153:6 [INFO] [stderr] | [INFO] [stderr] 153 | let mut circle1 = Circle { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:166:6 [INFO] [stderr] | [INFO] [stderr] 166 | let mut rect1 = Rectangle { [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.69s [INFO] running `"docker" "inspect" "5df0fda245ae250ed889abdd36b0f0d3c0d95c8232594a55e3937f8645a82d23"` [INFO] running `"docker" "rm" "-f" "5df0fda245ae250ed889abdd36b0f0d3c0d95c8232594a55e3937f8645a82d23"` [INFO] [stdout] 5df0fda245ae250ed889abdd36b0f0d3c0d95c8232594a55e3937f8645a82d23 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ConceptsDemo/rust-example:/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=warn" "-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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 18d29b327c6fa3a2048377e2d38828c31a15285e6037f7b1025c0b8830e3d796 [INFO] running `"docker" "start" "-a" "18d29b327c6fa3a2048377e2d38828c31a15285e6037f7b1025c0b8830e3d796"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/rust_example-c9cb5dcf0e93f03c [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "18d29b327c6fa3a2048377e2d38828c31a15285e6037f7b1025c0b8830e3d796"` [INFO] running `"docker" "rm" "-f" "18d29b327c6fa3a2048377e2d38828c31a15285e6037f7b1025c0b8830e3d796"` [INFO] [stdout] 18d29b327c6fa3a2048377e2d38828c31a15285e6037f7b1025c0b8830e3d796