[INFO] cloning repository https://github.com/mohanson/b_cycles
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mohanson/b_cycles" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohanson%2Fb_cycles", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohanson%2Fb_cycles'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cad69e9e0f873e6822618ae62317af5af9a54593
[INFO] testing mohanson/b_cycles 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%2Fmohanson%2Fb_cycles" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mohanson/b_cycles 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/mohanson/b_cycles
[INFO] finished tweaking git repo https://github.com/mohanson/b_cycles
[INFO] tweaked toml for git repo https://github.com/mohanson/b_cycles written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/mohanson/b_cycles 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] fab4d2ab215c6adb6868503164489348034d03a8f16bb1543452f5fca859d703
[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" "fab4d2ab215c6adb6868503164489348034d03a8f16bb1543452f5fca859d703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fab4d2ab215c6adb6868503164489348034d03a8f16bb1543452f5fca859d703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab4d2ab215c6adb6868503164489348034d03a8f16bb1543452f5fca859d703", kill_on_drop: false }`
[INFO] [stdout] fab4d2ab215c6adb6868503164489348034d03a8f16bb1543452f5fca859d703
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a38a2e1fff42d72135815298635e1416478202fb676ce89bf2f2dc8bf7d2beba
[INFO] running `Command { std: "docker" "start" "-a" "a38a2e1fff42d72135815298635e1416478202fb676ce89bf2f2dc8bf7d2beba", kill_on_drop: false }`
[INFO] [stderr]    Compiling b_cycles v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:547:9
[INFO] [stdout]     |
[INFO] [stdout] 547 |     for i in args.iter() {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/main.rs:548:13
[INFO] [stdout]     |
[INFO] [stdout] 548 |         for j in args.iter() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:546:9
[INFO] [stdout]     |
[INFO] [stdout] 546 |     let mut s = 0;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `eight`
[INFO] [stdout]    --> src/main.rs:413:1
[INFO] [stdout]     |
[INFO] [stdout] 413 | const eight: u64 = 8;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `eight` should have an upper case name
[INFO] [stdout]    --> src/main.rs:413:7
[INFO] [stdout]     |
[INFO] [stdout] 413 | const eight: u64 = 8;
[INFO] [stdout]     |       ^^^^^ help: convert the identifier to upper case: `EIGHT`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `args` should have an upper case name
[INFO] [stdout]    --> src/main.rs:414:7
[INFO] [stdout]     |
[INFO] [stdout] 414 | const args: [u64; 128] = [
[INFO] [stdout]     |       ^^^^ help: convert the identifier to upper case: `ARGS`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "a38a2e1fff42d72135815298635e1416478202fb676ce89bf2f2dc8bf7d2beba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38a2e1fff42d72135815298635e1416478202fb676ce89bf2f2dc8bf7d2beba", kill_on_drop: false }`
[INFO] [stdout] a38a2e1fff42d72135815298635e1416478202fb676ce89bf2f2dc8bf7d2beba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 8eb95ac95577ba99f1bf729c86bdbaa4b4225b69b17cfe6eb9191fb0aacaf0d5
[INFO] running `Command { std: "docker" "start" "-a" "8eb95ac95577ba99f1bf729c86bdbaa4b4225b69b17cfe6eb9191fb0aacaf0d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling b_cycles v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:547:9
[INFO] [stdout]     |
[INFO] [stdout] 547 |     for i in args.iter() {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/main.rs:548:13
[INFO] [stdout]     |
[INFO] [stdout] 548 |         for j in args.iter() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:546:9
[INFO] [stdout]     |
[INFO] [stdout] 546 |     let mut s = 0;
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `eight`
[INFO] [stdout]    --> src/main.rs:413:1
[INFO] [stdout]     |
[INFO] [stdout] 413 | const eight: u64 = 8;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `eight` should have an upper case name
[INFO] [stdout]    --> src/main.rs:413:7
[INFO] [stdout]     |
[INFO] [stdout] 413 | const eight: u64 = 8;
[INFO] [stdout]     |       ^^^^^ help: convert the identifier to upper case: `EIGHT`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `args` should have an upper case name
[INFO] [stdout]    --> src/main.rs:414:7
[INFO] [stdout]     |
[INFO] [stdout] 414 | const args: [u64; 128] = [
[INFO] [stdout]     |       ^^^^ help: convert the identifier to upper case: `ARGS`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/b_cycles-1c955c052e45fe67)
[INFO] running `Command { std: "docker" "inspect" "8eb95ac95577ba99f1bf729c86bdbaa4b4225b69b17cfe6eb9191fb0aacaf0d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eb95ac95577ba99f1bf729c86bdbaa4b4225b69b17cfe6eb9191fb0aacaf0d5", kill_on_drop: false }`
[INFO] [stdout] 8eb95ac95577ba99f1bf729c86bdbaa4b4225b69b17cfe6eb9191fb0aacaf0d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] 0b45a5f7625e1dc436986222944267ceb65f8e9a590e6677f174c681959f329d
[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" "0b45a5f7625e1dc436986222944267ceb65f8e9a590e6677f174c681959f329d", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:547:9
[INFO] [stderr]     |
[INFO] [stderr] 547 |     for i in args.iter() {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:548:13
[INFO] [stderr]     |
[INFO] [stderr] 548 |         for j in args.iter() {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:546:9
[INFO] [stderr]     |
[INFO] [stderr] 546 |     let mut s = 0;
[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: constant is never used: `eight`
[INFO] [stderr]    --> src/main.rs:413:1
[INFO] [stderr]     |
[INFO] [stderr] 413 | const eight: u64 = 8;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `eight` should have an upper case name
[INFO] [stderr]    --> src/main.rs:413:7
[INFO] [stderr]     |
[INFO] [stderr] 413 | const eight: u64 = 8;
[INFO] [stderr]     |       ^^^^^ help: convert the identifier to upper case: `EIGHT`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `args` should have an upper case name
[INFO] [stderr]    --> src/main.rs:414:7
[INFO] [stderr]     |
[INFO] [stderr] 414 | const args: [u64; 128] = [
[INFO] [stderr]     |       ^^^^ help: convert the identifier to upper case: `ARGS`
[INFO] [stderr] 
[INFO] [stderr] warning: `b_cycles` (bin "b_cycles" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/b_cycles-1c955c052e45fe67)
[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 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b45a5f7625e1dc436986222944267ceb65f8e9a590e6677f174c681959f329d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b45a5f7625e1dc436986222944267ceb65f8e9a590e6677f174c681959f329d", kill_on_drop: false }`
[INFO] [stdout] 0b45a5f7625e1dc436986222944267ceb65f8e9a590e6677f174c681959f329d