[INFO] cloning repository https://github.com/johnward/bft
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnward/bft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnward%2Fbft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnward%2Fbft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c167d9a66aece1c6c434135eb96da1e202ac5bc1
[INFO] testing johnward/bft against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnward%2Fbft" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnward/bft on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnward/bft
[INFO] finished tweaking git repo https://github.com/johnward/bft
[INFO] tweaked toml for git repo https://github.com/johnward/bft written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/johnward/bft already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 4d8e639ce5d01cebae2ca686c410cc6e1cd77d27bd58d904b648c54a44982b07
[INFO] running `Command { std: "docker" "start" "-a" "4d8e639ce5d01cebae2ca686c410cc6e1cd77d27bd58d904b648c54a44982b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d8e639ce5d01cebae2ca686c410cc6e1cd77d27bd58d904b648c54a44982b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8e639ce5d01cebae2ca686c410cc6e1cd77d27bd58d904b648c54a44982b07", kill_on_drop: false }`
[INFO] [stdout] 4d8e639ce5d01cebae2ca686c410cc6e1cd77d27bd58d904b648c54a44982b07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3238dad447e710e96752c0b68c0c6b75217d50394c0e682bbc7f8660df361810
[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" "3238dad447e710e96752c0b68c0c6b75217d50394c0e682bbc7f8660df361810", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bft_types v0.1.0 (/opt/rustwide/workdir/bft_types)
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling bft_interp v0.1.0 (/opt/rustwide/workdir/bft_interp)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> bft_interp/src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             (number_to_add - ((u8::max_value() - current_number) + 1)) // + 1 to take into account the zero
[INFO] [stdout]    |             ^                                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -             (number_to_add - ((u8::max_value() - current_number) + 1)) // + 1 to take into account the zero
[INFO] [stdout] 50 +             number_to_add - ((u8::max_value() - current_number) + 1) // + 1 to take into account the zero
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> bft_interp/src/lib.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             (u8::max_value() - ((number_to_sub - current_number) - 1)) // - 1 to take into account the zero
[INFO] [stdout]    |             ^                                                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 59 -             (u8::max_value() - ((number_to_sub - current_number) - 1)) // - 1 to take into account the zero
[INFO] [stdout] 59 +             u8::max_value() - ((number_to_sub - current_number) - 1) // - 1 to take into account the zero
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `can_grow`
[INFO] [stdout]    --> bft_interp/src/lib.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     can_grow: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.87s
[INFO] running `Command { std: "docker" "inspect" "3238dad447e710e96752c0b68c0c6b75217d50394c0e682bbc7f8660df361810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3238dad447e710e96752c0b68c0c6b75217d50394c0e682bbc7f8660df361810", kill_on_drop: false }`
[INFO] [stdout] 3238dad447e710e96752c0b68c0c6b75217d50394c0e682bbc7f8660df361810
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53f96c3cf741cba44d313443fa1ddc9a79b705be2d9071acb4a6e5b4e13a275e
[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" "53f96c3cf741cba44d313443fa1ddc9a79b705be2d9071acb4a6e5b4e13a275e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> bft_interp/src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             (number_to_add - ((u8::max_value() - current_number) + 1)) // + 1 to take into account the zero
[INFO] [stdout]    |             ^                                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -             (number_to_add - ((u8::max_value() - current_number) + 1)) // + 1 to take into account the zero
[INFO] [stdout] 50 +             number_to_add - ((u8::max_value() - current_number) + 1) // + 1 to take into account the zero
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> bft_interp/src/lib.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             (u8::max_value() - ((number_to_sub - current_number) - 1)) // - 1 to take into account the zero
[INFO] [stdout]    |             ^                                                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 59 -             (u8::max_value() - ((number_to_sub - current_number) - 1)) // - 1 to take into account the zero
[INFO] [stdout] 59 +             u8::max_value() - ((number_to_sub - current_number) - 1) // - 1 to take into account the zero
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `can_grow`
[INFO] [stdout]    --> bft_interp/src/lib.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     can_grow: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "53f96c3cf741cba44d313443fa1ddc9a79b705be2d9071acb4a6e5b4e13a275e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53f96c3cf741cba44d313443fa1ddc9a79b705be2d9071acb4a6e5b4e13a275e", kill_on_drop: false }`
[INFO] [stdout] 53f96c3cf741cba44d313443fa1ddc9a79b705be2d9071acb4a6e5b4e13a275e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 58a7cb5a8fd19856908bf1e1e0293c86da926729e95f4144ec321a0c710033c4
[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" "58a7cb5a8fd19856908bf1e1e0293c86da926729e95f4144ec321a0c710033c4", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> bft_interp/src/lib.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |             (number_to_add - ((u8::max_value() - current_number) + 1)) // + 1 to take into account the zero
[INFO] [stderr]    |             ^                                                        ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 50 -             (number_to_add - ((u8::max_value() - current_number) + 1)) // + 1 to take into account the zero
[INFO] [stderr] 50 +             number_to_add - ((u8::max_value() - current_number) + 1) // + 1 to take into account the zero
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> bft_interp/src/lib.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |             (u8::max_value() - ((number_to_sub - current_number) - 1)) // - 1 to take into account the zero
[INFO] [stderr]    |             ^                                                        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 59 -             (u8::max_value() - ((number_to_sub - current_number) - 1)) // - 1 to take into account the zero
[INFO] [stderr] 59 +             u8::max_value() - ((number_to_sub - current_number) - 1) // - 1 to take into account the zero
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `can_grow`
[INFO] [stderr]    --> bft_interp/src/lib.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     can_grow: bool,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `bft_interp` (lib) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bft-fc8c4ca794b0ab72)
[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" "58a7cb5a8fd19856908bf1e1e0293c86da926729e95f4144ec321a0c710033c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a7cb5a8fd19856908bf1e1e0293c86da926729e95f4144ec321a0c710033c4", kill_on_drop: false }`
[INFO] [stdout] 58a7cb5a8fd19856908bf1e1e0293c86da926729e95f4144ec321a0c710033c4