[INFO] cloning repository https://github.com/lf-/synthtoy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lf-/synthtoy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fsynthtoy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fsynthtoy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88579051fbe30da01f4746f676b5018635014efb
[INFO] testing lf-/synthtoy against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fsynthtoy" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lf-/synthtoy on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lf-/synthtoy
[INFO] finished tweaking git repo https://github.com/lf-/synthtoy
[INFO] tweaked toml for git repo https://github.com/lf-/synthtoy written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lf-/synthtoy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8defe4bb35d84ef1a50293e9b00ef96c4347ed7f3e9c92f58e089fbe30e70eed
[INFO] running `Command { std: "docker" "start" "-a" "8defe4bb35d84ef1a50293e9b00ef96c4347ed7f3e9c92f58e089fbe30e70eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8defe4bb35d84ef1a50293e9b00ef96c4347ed7f3e9c92f58e089fbe30e70eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8defe4bb35d84ef1a50293e9b00ef96c4347ed7f3e9c92f58e089fbe30e70eed", kill_on_drop: false }`
[INFO] [stdout] 8defe4bb35d84ef1a50293e9b00ef96c4347ed7f3e9c92f58e089fbe30e70eed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87b252c411d1d819cdfec7d69fadae5f701ea95efa5dba580e26a5930d3d54fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "87b252c411d1d819cdfec7d69fadae5f701ea95efa5dba580e26a5930d3d54fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]    Compiling riff v1.0.1
[INFO] [stderr]    Compiling wav v1.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stderr]    Compiling synthtoy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `RefCell`, `thread`, `time::Duration`
[INFO] [stdout]  --> src/main.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::{Cell, RefCell},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 |     thread,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     time::Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn new(components: Vec<Box<dyn Filter>>) -> Pipe {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn add<T>(&mut self, comp: T)
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.21s
[INFO] running `Command { std: "docker" "inspect" "87b252c411d1d819cdfec7d69fadae5f701ea95efa5dba580e26a5930d3d54fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b252c411d1d819cdfec7d69fadae5f701ea95efa5dba580e26a5930d3d54fa", kill_on_drop: false }`
[INFO] [stdout] 87b252c411d1d819cdfec7d69fadae5f701ea95efa5dba580e26a5930d3d54fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 95a81e5a5acb9564b481f8351ffc7dd805151cef89b090c1a486ed0ce3e54d20
[INFO] running `Command { std: "docker" "start" "-a" "95a81e5a5acb9564b481f8351ffc7dd805151cef89b090c1a486ed0ce3e54d20", kill_on_drop: false }`
[INFO] [stderr]    Compiling synthtoy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `RefCell`, `thread`, `time::Duration`
[INFO] [stdout]  --> src/main.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::{Cell, RefCell},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 |     thread,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     time::Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn new(components: Vec<Box<dyn Filter>>) -> Pipe {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn add<T>(&mut self, comp: T)
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/synthtoy-4586b8c77ef8184b)
[INFO] running `Command { std: "docker" "inspect" "95a81e5a5acb9564b481f8351ffc7dd805151cef89b090c1a486ed0ce3e54d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a81e5a5acb9564b481f8351ffc7dd805151cef89b090c1a486ed0ce3e54d20", kill_on_drop: false }`
[INFO] [stdout] 95a81e5a5acb9564b481f8351ffc7dd805151cef89b090c1a486ed0ce3e54d20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6bbc9fd553e62ea93b0ca46c2f41dd8e9f998db1b1b007e0f55defc2ba286fc3
[INFO] running `Command { std: "docker" "start" "-a" "6bbc9fd553e62ea93b0ca46c2f41dd8e9f998db1b1b007e0f55defc2ba286fc3", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `RefCell`, `thread`, `time::Duration`
[INFO] [stderr]  --> src/main.rs:2:18
[INFO] [stderr]   |
[INFO] [stderr] 2 |     cell::{Cell, RefCell},
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 5 |     thread,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 6 |     time::Duration,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/main.rs:69:8
[INFO] [stderr]    |
[INFO] [stderr] 69 |     fn new(components: Vec<Box<dyn Filter>>) -> Pipe {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]   --> src/main.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn add<T>(&mut self, comp: T)
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `synthtoy` (bin "synthtoy" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/synthtoy-4586b8c77ef8184b)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6bbc9fd553e62ea93b0ca46c2f41dd8e9f998db1b1b007e0f55defc2ba286fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bbc9fd553e62ea93b0ca46c2f41dd8e9f998db1b1b007e0f55defc2ba286fc3", kill_on_drop: false }`
[INFO] [stdout] 6bbc9fd553e62ea93b0ca46c2f41dd8e9f998db1b1b007e0f55defc2ba286fc3