[INFO] updating cached repository https://github.com/huangqian/rust-in-action
[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] f0233f0ce6a5479c8760f7df5e88f818c19d400f
[INFO] checking huangqian/rust-in-action against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuangqian%2Frust-in-action" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huangqian/rust-in-action on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/huangqian/rust-in-action
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/huangqian/rust-in-action
[INFO] tweaked toml for git repo https://github.com/huangqian/rust-in-action written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/huangqian/rust-in-action already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=allow" "-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" "+5e633973aa9255a88b65a39484627bb54e6044b3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dcfa52137fa3e36b1f80eef1aaf2a034147ba955a830abc67bc0dff152bae174
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "dcfa52137fa3e36b1f80eef1aaf2a034147ba955a830abc67bc0dff152bae174"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]    Compiling redis v0.10.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking memchr v2.1.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking nix v0.12.0
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking miniz-sys v0.1.11
[INFO] [stderr]     Checking block-buffer v0.7.0
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking flate2 v1.0.4
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking combine v3.5.2
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking regex v1.0.6
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking twox-hash v1.1.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking mysql_common v0.15.0
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking mysql v15.1.0
[INFO] [stderr]     Checking rust-in-action v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `box`
[INFO] [stderr]   --> examples/box.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / #[cfg(test)]
[INFO] [stderr] 2  | | mod box_test {
[INFO] [stderr] 3  | |     use box_test::List::{Cons, Nil};
[INFO] [stderr] 4  | |     use MyBox;
[INFO] [stderr] ...  |
[INFO] [stderr] 60 | |     }
[INFO] [stderr] 61 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/box.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `rust-in-action`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0601]: `main` function not found in crate `borrow`
[INFO] [stderr]   --> examples/borrow.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | / #[cfg(test)]
[INFO] [stderr] 16 | | mod borrow_reference_pointer_test {
[INFO] [stderr] 17 | |
[INFO] [stderr] 18 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 41 | |
[INFO] [stderr] 42 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/borrow.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `rust-in-action`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> examples/redis.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene, decl_macro)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `redis`
[INFO] [stderr]   --> examples/redis.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / #![feature(proc_macro_hygiene, decl_macro)]
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | | #[macro_use]
[INFO] [stderr] 4  | | extern crate redis;
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/redis.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0601.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `rust-in-action`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0601]: `main` function not found in crate `mysql`
[INFO] [stderr]   --> examples/mysql.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / extern crate core;
[INFO] [stderr] 2  | | #[macro_use]
[INFO] [stderr] 3  | | extern crate mysql;
[INFO] [stderr] 4  | |
[INFO] [stderr] ...  |
[INFO] [stderr] 87 | |     }
[INFO] [stderr] 88 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/mysql.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `rust-in-action`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "dcfa52137fa3e36b1f80eef1aaf2a034147ba955a830abc67bc0dff152bae174"`
[INFO] running `"docker" "rm" "-f" "dcfa52137fa3e36b1f80eef1aaf2a034147ba955a830abc67bc0dff152bae174"`
[INFO] [stdout] dcfa52137fa3e36b1f80eef1aaf2a034147ba955a830abc67bc0dff152bae174