[INFO] updating cached repository https://github.com/syuni/rust-by-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] b3f4cf9a5219e47165d823446a761a963ce48beb
[INFO] testing syuni/rust-by-example against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyuni%2Frust-by-example" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/syuni/rust-by-example on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/syuni/rust-by-example
[INFO] finished tweaking git repo https://github.com/syuni/rust-by-example
[INFO] tweaked toml for git repo https://github.com/syuni/rust-by-example written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/syuni/rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-5/source/src/8_2_4.rs
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 42e92b67fc2182ca24ac14dcc7b86a1bfa5cfe2d21af478dfa6bd2a33fc03e6e
[INFO] running `"docker" "start" "-a" "42e92b67fc2182ca24ac14dcc7b86a1bfa5cfe2d21af478dfa6bd2a33fc03e6e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/8_2_4.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `noisy_unused_function`
[INFO] [stderr]  --> src/12_1.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn noisy_unused_function() {}
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]   --> src/9_4.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     use std::iter;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `9_4`
[INFO] [stderr]   --> src/9_4.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / use std::ops::{Add, Mul, Sub};
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | | macro_rules! assert_equal_len {
[INFO] [stderr] 4  | |     // `tt`（トークン木）識別子は演算子とトークン用の識別子です。
[INFO] [stderr] ...  |
[INFO] [stderr] 57 | |     test!(sub_assign, 3u32, 2u32, 1u32);
[INFO] [stderr] 58 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `src/9_4.rs`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/18_4_2.rs:20:63
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Err(why) => panic!("couldn't create {}: {}", display, Error::description(&why)),
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/18_4_2.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             Error::description(&why)
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `rust-by-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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "42e92b67fc2182ca24ac14dcc7b86a1bfa5cfe2d21af478dfa6bd2a33fc03e6e"`
[INFO] running `"docker" "rm" "-f" "42e92b67fc2182ca24ac14dcc7b86a1bfa5cfe2d21af478dfa6bd2a33fc03e6e"`
[INFO] [stdout] 42e92b67fc2182ca24ac14dcc7b86a1bfa5cfe2d21af478dfa6bd2a33fc03e6e