[INFO] cloning repository https://github.com/hh1718/rust_mysql_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hh1718/rust_mysql_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhh1718%2Frust_mysql_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhh1718%2Frust_mysql_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a043bd288d591e3d81fdf56e7a5f24b17f108cd1
[INFO] checking hh1718/rust_mysql_example against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhh1718%2Frust_mysql_example" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hh1718/rust_mysql_example on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hh1718/rust_mysql_example
[INFO] finished tweaking git repo https://github.com/hh1718/rust_mysql_example
[INFO] tweaked toml for git repo https://github.com/hh1718/rust_mysql_example written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/hh1718/rust_mysql_example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 684266d2b14ba577a3ba36b44e0512fd0b472a9c4d616ade86d1697ce2684b22
[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" "684266d2b14ba577a3ba36b44e0512fd0b472a9c4d616ade86d1697ce2684b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "684266d2b14ba577a3ba36b44e0512fd0b472a9c4d616ade86d1697ce2684b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "684266d2b14ba577a3ba36b44e0512fd0b472a9c4d616ade86d1697ce2684b22", kill_on_drop: false }`
[INFO] [stdout] 684266d2b14ba577a3ba36b44e0512fd0b472a9c4d616ade86d1697ce2684b22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7abd4fcca2d2b3c22846565410b17a15314250c0c12c9a793761ffb652ab40de
[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" "7abd4fcca2d2b3c22846565410b17a15314250c0c12c9a793761ffb652ab40de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling mysql v19.0.1
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling libz-sys v1.1.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]    Compiling standback v0.2.10
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking lru v0.6.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking rust_decimal v1.7.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking lexical v5.2.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking bigdecimal v0.1.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling derive_utils v0.10.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling io-enum v0.2.3
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking mysql_common v0.22.2
[INFO] [stderr]     Checking rust_mysql_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `prep_exec` found for struct `mysql::Pool` in the current scope
[INFO] [stdout]   --> src/dao/db.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pool.prep_exec(query, ())
[INFO] [stdout]    |        ^^^^^^^^^ method not found in `mysql::Pool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_mysql_example`.
[INFO] [stdout] error[E0599]: no method named `prep_exec` found for struct `mysql::Pool` in the current scope
[INFO] [stdout]   --> src/dao/db.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pool.prep_exec(query, ())
[INFO] [stdout]    |        ^^^^^^^^^ method not found in `mysql::Pool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7abd4fcca2d2b3c22846565410b17a15314250c0c12c9a793761ffb652ab40de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7abd4fcca2d2b3c22846565410b17a15314250c0c12c9a793761ffb652ab40de", kill_on_drop: false }`
[INFO] [stdout] 7abd4fcca2d2b3c22846565410b17a15314250c0c12c9a793761ffb652ab40de