[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 try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhh1718%2Frust_mysql_example" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hh1718/rust_mysql_example on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "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-9/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" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/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[INFO] the lockfile is outdated, regenerating it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" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+d7b51666469c792a8a3f40849607739bae1e705e" "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] a0ee335f3abfebfec3253eb82fdd852cebe4505f56f1b7ec9ea1f67e16ae2da9
[INFO] running `"docker" "start" "-a" "a0ee335f3abfebfec3253eb82fdd852cebe4505f56f1b7ec9ea1f67e16ae2da9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling mysql v18.2.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling openssl-sys v0.9.56
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]     Checking crc32fast v1.2.0
[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 serde_json v1.0.53
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking rust_decimal v1.5.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.41
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]     Checking bigdecimal v0.1.2
[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]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling io-enum v0.2.2
[INFO] [stderr]     Checking failure v0.1.8
[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" "a0ee335f3abfebfec3253eb82fdd852cebe4505f56f1b7ec9ea1f67e16ae2da9"`
[INFO] running `"docker" "rm" "-f" "a0ee335f3abfebfec3253eb82fdd852cebe4505f56f1b7ec9ea1f67e16ae2da9"`
[INFO] [stdout] a0ee335f3abfebfec3253eb82fdd852cebe4505f56f1b7ec9ea1f67e16ae2da9