[INFO] updating cached repository StephenAshmore/synth [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/StephenAshmore/synth [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/StephenAshmore/synth" "work/ex/beta-1.37-6/sources/1.36.0/gh/StephenAshmore/synth"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/StephenAshmore/synth'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/StephenAshmore/synth" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/StephenAshmore/synth"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/StephenAshmore/synth'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 9b24f7a1a1c2b5157a2c8fa5c511e623d4c43901 [INFO] sha for GitHub repo StephenAshmore/synth: 9b24f7a1a1c2b5157a2c8fa5c511e623d4c43901 [INFO] validating manifest of StephenAshmore/synth on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of StephenAshmore/synth on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing StephenAshmore/synth [INFO] finished frobbing StephenAshmore/synth [INFO] frobbed toml for StephenAshmore/synth written to work/ex/beta-1.37-6/sources/1.36.0/gh/StephenAshmore/synth/Cargo.toml [INFO] started frobbing StephenAshmore/synth [INFO] finished frobbing StephenAshmore/synth [INFO] frobbed toml for StephenAshmore/synth written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/StephenAshmore/synth/Cargo.toml [INFO] crate StephenAshmore/synth already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing StephenAshmore/synth against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/StephenAshmore/synth:/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" "+beta-2019-07-23" "build" "--frozen"` [INFO] [stdout] 4f20748eb7f1e24b4269d8645e8ec3411f411878e0e9b7f843a905c393c0b1a1 [INFO] running `"docker" "start" "-a" "4f20748eb7f1e24b4269d8645e8ec3411f411878e0e9b7f843a905c393c0b1a1"` [INFO] [stderr] Compiling terminal_size v0.1.7 [INFO] [stderr] Compiling synth v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused imports: `Receiver`, `Sender` [INFO] [stderr] --> src/main.rs:3:23 [INFO] [stderr] | [INFO] [stderr] 3 | use std::sync::mpsc::{Sender, Receiver}; [INFO] [stderr] | ^^^^^^ ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::mpsc` [INFO] [stderr] --> src/cli/interface.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::sync::mpsc; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `BufRead` [INFO] [stderr] --> src/cli/display.rs:1:28 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io::{self, Write, BufRead}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `error` [INFO] [stderr] --> src/cli/display.rs:41:21 [INFO] [stderr] | [INFO] [stderr] 41 | Err(error) => String::from(""), [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_error` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buffer_pointer` [INFO] [stderr] --> src/cli/display.rs:57:17 [INFO] [stderr] | [INFO] [stderr] 57 | let mut buffer_pointer = 0; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_buffer_pointer` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let mut user_finished = false; [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/cli/display.rs:57:13 [INFO] [stderr] | [INFO] [stderr] 57 | let mut buffer_pointer = 0; [INFO] [stderr] | ----^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never used: `m_sender` [INFO] [stderr] --> src/cli/interface.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | m_sender: Sender, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/cli/display.rs:93:9 [INFO] [stderr] | [INFO] [stderr] 93 | io::stdout().flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.18s [INFO] running `"docker" "inspect" "4f20748eb7f1e24b4269d8645e8ec3411f411878e0e9b7f843a905c393c0b1a1"` [INFO] running `"docker" "rm" "-f" "4f20748eb7f1e24b4269d8645e8ec3411f411878e0e9b7f843a905c393c0b1a1"` [INFO] [stdout] 4f20748eb7f1e24b4269d8645e8ec3411f411878e0e9b7f843a905c393c0b1a1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/StephenAshmore/synth:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"` [INFO] [stdout] 938f6f1cf7fa38dd98e134970201e76e469029771ebab4d96236a395d30808ce [INFO] running `"docker" "start" "-a" "938f6f1cf7fa38dd98e134970201e76e469029771ebab4d96236a395d30808ce"` [INFO] [stderr] Compiling synth v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused imports: `Receiver`, `Sender` [INFO] [stderr] --> src/main.rs:3:23 [INFO] [stderr] | [INFO] [stderr] 3 | use std::sync::mpsc::{Sender, Receiver}; [INFO] [stderr] | ^^^^^^ ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::mpsc` [INFO] [stderr] --> src/cli/interface.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::sync::mpsc; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `BufRead` [INFO] [stderr] --> src/cli/display.rs:1:28 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io::{self, Write, BufRead}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `error` [INFO] [stderr] --> src/cli/display.rs:41:21 [INFO] [stderr] | [INFO] [stderr] 41 | Err(error) => String::from(""), [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_error` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buffer_pointer` [INFO] [stderr] --> src/cli/display.rs:57:17 [INFO] [stderr] | [INFO] [stderr] 57 | let mut buffer_pointer = 0; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_buffer_pointer` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let mut user_finished = false; [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/cli/display.rs:57:13 [INFO] [stderr] | [INFO] [stderr] 57 | let mut buffer_pointer = 0; [INFO] [stderr] | ----^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never used: `m_sender` [INFO] [stderr] --> src/cli/interface.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | m_sender: Sender, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/cli/display.rs:93:9 [INFO] [stderr] | [INFO] [stderr] 93 | io::stdout().flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `"docker" "inspect" "938f6f1cf7fa38dd98e134970201e76e469029771ebab4d96236a395d30808ce"` [INFO] running `"docker" "rm" "-f" "938f6f1cf7fa38dd98e134970201e76e469029771ebab4d96236a395d30808ce"` [INFO] [stdout] 938f6f1cf7fa38dd98e134970201e76e469029771ebab4d96236a395d30808ce [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/StephenAshmore/synth:/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" "+beta-2019-07-23" "test" "--frozen"` [INFO] [stdout] 28c8ba3a15ee5a439311d7c4af1dd67a4ced91e29b3447865c5fc1c9d9b60ad4 [INFO] running `"docker" "start" "-a" "28c8ba3a15ee5a439311d7c4af1dd67a4ced91e29b3447865c5fc1c9d9b60ad4"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/synth-688fac830e2946ee [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" "28c8ba3a15ee5a439311d7c4af1dd67a4ced91e29b3447865c5fc1c9d9b60ad4"` [INFO] running `"docker" "rm" "-f" "28c8ba3a15ee5a439311d7c4af1dd67a4ced91e29b3447865c5fc1c9d9b60ad4"` [INFO] [stdout] 28c8ba3a15ee5a439311d7c4af1dd67a4ced91e29b3447865c5fc1c9d9b60ad4