[INFO] fetching crate cassandra-cpp-sys 0.12.1...
[INFO] checking cassandra-cpp-sys-0.12.1 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate cassandra-cpp-sys 0.12.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cassandra-cpp-sys 0.12.1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cassandra-cpp-sys 0.12.1
[INFO] finished tweaking crates.io crate cassandra-cpp-sys 0.12.1
[INFO] tweaked toml for crates.io crate cassandra-cpp-sys 0.12.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate cassandra-cpp-sys 0.12.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 4ac431f49c6daa932f1a503ba888ca4dd80cad6a349043e7d4a6c3664cda54f6
[INFO] running `Command { std: "docker" "start" "-a" "4ac431f49c6daa932f1a503ba888ca4dd80cad6a349043e7d4a6c3664cda54f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ac431f49c6daa932f1a503ba888ca4dd80cad6a349043e7d4a6c3664cda54f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ac431f49c6daa932f1a503ba888ca4dd80cad6a349043e7d4a6c3664cda54f6", kill_on_drop: false }`
[INFO] [stdout] 4ac431f49c6daa932f1a503ba888ca4dd80cad6a349043e7d4a6c3664cda54f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f71ea3de8d0298e87c6d81222ecf7886364f0a2edc511d973d06c2652275573
[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" "1f71ea3de8d0298e87c6d81222ecf7886364f0a2edc511d973d06c2652275573", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling cassandra-cpp-sys v0.12.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]  --> src/ffi_util.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Ok(try!(str::from_utf8(slice)).to_owned())
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]   --> examples/tuple.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let rc = cass_future_error_code(future);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]   --> examples/tuple.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             rc => print_error(future),
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/tuple.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let mut session = &mut *cass_session_new();
[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: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/ssl.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut file = try!(File::open(file));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/ssl.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let cert_size = try!(file.metadata()).len() as usize;
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> examples/ssl.rs:18:24
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let byte_len = try!(file.read_to_end(&mut cert));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]   --> examples/ssl.rs:92:21
[INFO] [stdout]    |
[INFO] [stdout] 92 |                     rc => {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]   --> examples/named_parameters.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let rc = cass_future_error_code(future);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> examples/named_parameters.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let result = match cass_future_error_code(future) {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> examples/named_parameters.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let result = match connect_session(session, cluster) {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]    --> examples/named_parameters.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |             rc => {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> examples/simple.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let result = match cass_future_error_code(connect_future) {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]   --> examples/simple.rs:52:21
[INFO] [stdout]    |
[INFO] [stdout] 52 |                     rc => {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]   --> examples/simple.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             rc => {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/async.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut cluster = create_cluster();
[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: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]  --> src/ffi_util.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Ok(try!(str::from_utf8(slice)).to_owned())
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> examples/maps.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let result = match cass_future_error_code(future) {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `select_from_maps`
[INFO] [stdout]   --> examples/maps.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn select_from_maps(session: &mut CassSession, key: &str) -> Result<(), CassError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.44s
[INFO] running `Command { std: "docker" "inspect" "1f71ea3de8d0298e87c6d81222ecf7886364f0a2edc511d973d06c2652275573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f71ea3de8d0298e87c6d81222ecf7886364f0a2edc511d973d06c2652275573", kill_on_drop: false }`
[INFO] [stdout] 1f71ea3de8d0298e87c6d81222ecf7886364f0a2edc511d973d06c2652275573
