[INFO] fetching crate s7 0.1.9...
[INFO] testing s7-0.1.9 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate s7 0.1.9 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate s7 0.1.9 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate s7 0.1.9
[INFO] finished tweaking crates.io crate s7 0.1.9
[INFO] tweaked toml for crates.io crate s7 0.1.9 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98c0fc09a237417f986e8a9c4bb04ffd851025cc37ffe3e77ddf66c4fc00606f
[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" "98c0fc09a237417f986e8a9c4bb04ffd851025cc37ffe3e77ddf66c4fc00606f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98c0fc09a237417f986e8a9c4bb04ffd851025cc37ffe3e77ddf66c4fc00606f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98c0fc09a237417f986e8a9c4bb04ffd851025cc37ffe3e77ddf66c4fc00606f", kill_on_drop: false }`
[INFO] [stdout] 98c0fc09a237417f986e8a9c4bb04ffd851025cc37ffe3e77ddf66c4fc00606f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef7f7d45b783be62212e4eafdbcdb023d7a39c39bedcb81a2d1277698924f00b
[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" "ef7f7d45b783be62212e4eafdbcdb023d7a39c39bedcb81a2d1277698924f00b", kill_on_drop: false }`
[INFO] [stderr]    Compiling s7 v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data_szl`
[INFO] [stdout]    --> src/client.rs:723:13
[INFO] [stdout]     |
[INFO] [stdout] 723 |         let data_szl = 0;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "ef7f7d45b783be62212e4eafdbcdb023d7a39c39bedcb81a2d1277698924f00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef7f7d45b783be62212e4eafdbcdb023d7a39c39bedcb81a2d1277698924f00b", kill_on_drop: false }`
[INFO] [stdout] ef7f7d45b783be62212e4eafdbcdb023d7a39c39bedcb81a2d1277698924f00b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80ce066a31effc5c1b43a0ac7b3e7a10c338047e4c43bb5d6e3c1b18035badb8
[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" "80ce066a31effc5c1b43a0ac7b3e7a10c338047e4c43bb5d6e3c1b18035badb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling s7 v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data_szl`
[INFO] [stdout]    --> src/client.rs:723:13
[INFO] [stdout]     |
[INFO] [stdout] 723 |         let data_szl = 0;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_szl`
[INFO] [stdout]    --> src/client.rs:723:13
[INFO] [stdout]     |
[INFO] [stdout] 723 |         let data_szl = 0;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "80ce066a31effc5c1b43a0ac7b3e7a10c338047e4c43bb5d6e3c1b18035badb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80ce066a31effc5c1b43a0ac7b3e7a10c338047e4c43bb5d6e3c1b18035badb8", kill_on_drop: false }`
[INFO] [stdout] 80ce066a31effc5c1b43a0ac7b3e7a10c338047e4c43bb5d6e3c1b18035badb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 92deb64e9a83f41c36a7177c6ce144ff05f16deefd1044e8cdbc8831794d4fcf
[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" "92deb64e9a83f41c36a7177c6ce144ff05f16deefd1044e8cdbc8831794d4fcf", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `data_szl`
[INFO] [stderr]    --> src/client.rs:723:13
[INFO] [stderr]     |
[INFO] [stderr] 723 |         let data_szl = 0;
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data_szl`
[INFO] [stderr]    --> src/client.rs:723:13
[INFO] [stderr]     |
[INFO] [stderr] 723 |         let data_szl = 0;
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/s7-72c4110711694157
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test field::test_bool ... ok
[INFO] [stdout] test field::test_fields ... ok
[INFO] [stdout] test field::test_float ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests s7
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/client.rs - client::Client<T>::ab_read (line 260) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::ab_write (line 292) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::eb_read (line 196) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::ag_write (line 94) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::eb_write (line 228) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::mb_write (line 171) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::mb_read (line 146) ... ok
[INFO] [stdout] test src/client.rs - client::Client<T>::ag_read (line 42) ... ok
[INFO] [stdout] test src/field.rs - field::Fields (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "92deb64e9a83f41c36a7177c6ce144ff05f16deefd1044e8cdbc8831794d4fcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92deb64e9a83f41c36a7177c6ce144ff05f16deefd1044e8cdbc8831794d4fcf", kill_on_drop: false }`
[INFO] [stdout] 92deb64e9a83f41c36a7177c6ce144ff05f16deefd1044e8cdbc8831794d4fcf