[INFO] updating cached repository https://github.com/hh1718/rust_mysql_example
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a043bd288d591e3d81fdf56e7a5f24b17f108cd1
[INFO] checking hh1718/rust_mysql_example against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhh1718%2Frust_mysql_example" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hh1718/rust_mysql_example on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-8/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 `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/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[INFO] the lockfile is outdated, regenerating it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 `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c8dea6e32c8a36e32efce5756b8a18b61d686fb7aa655903c50475e2a6729680
[INFO] running `"docker" "start" "-a" "c8dea6e32c8a36e32efce5756b8a18b61d686fb7aa655903c50475e2a6729680"`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling mysql v18.2.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]    Compiling lexical v4.2.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking backtrace-sys v0.1.35
[INFO] [stderr]     Checking openssl-sys v0.9.55
[INFO] [stderr]     Checking libz-sys v1.0.25
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking backtrace v0.3.41
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking lru v0.4.3
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling derive_utils v0.9.1
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking bigdecimal v0.1.0
[INFO] [stderr]     Checking rust_decimal v1.4.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling io-enum v0.2.2
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking mysql_common v0.20.2
[INFO] [stderr]     Checking rust_mysql_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `prep_exec` found for struct `mysql::conn::pool::Pool` in the current scope
[INFO] [stderr]   --> src/dao/db.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |   pool.prep_exec(query, ())
[INFO] [stderr]    |        ^^^^^^^^^ method not found in `mysql::conn::pool::Pool`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `rust_mysql_example`.
[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] [stderr] error[E0599]: no method named `prep_exec` found for struct `mysql::conn::pool::Pool` in the current scope
[INFO] [stderr]   --> src/dao/db.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |   pool.prep_exec(query, ())
[INFO] [stderr]    |        ^^^^^^^^^ method not found in `mysql::conn::pool::Pool`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `rust_mysql_example`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c8dea6e32c8a36e32efce5756b8a18b61d686fb7aa655903c50475e2a6729680"`
[INFO] running `"docker" "rm" "-f" "c8dea6e32c8a36e32efce5756b8a18b61d686fb7aa655903c50475e2a6729680"`
[INFO] [stdout] c8dea6e32c8a36e32efce5756b8a18b61d686fb7aa655903c50475e2a6729680
