[INFO] crate runner 0.4.0 is already in cache
[INFO] testing runner-0.4.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate runner 0.4.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate runner 0.4.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate runner 0.4.0
[INFO] finished tweaking crates.io crate runner 0.4.0
[INFO] tweaked toml for crates.io crate runner 0.4.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+1.44.0" "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] ff6c9b3037db5c54f73e59afea5369cb945b2ce4c9e02c63369249021c8d29e9
[INFO] running `"docker" "start" "-a" "ff6c9b3037db5c54f73e59afea5369cb945b2ce4c9e02c63369249021c8d29e9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling lapp v0.4.0
[INFO] [stderr]    Compiling easy-shortcuts v0.3.0
[INFO] [stderr]    Compiling open v1.4.0
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling runner v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/crate_utils.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / lazy_static! {
[INFO] [stderr] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stderr] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/crate_utils.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / lazy_static! {
[INFO] [stderr] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stderr] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.87s
[INFO] running `"docker" "inspect" "ff6c9b3037db5c54f73e59afea5369cb945b2ce4c9e02c63369249021c8d29e9"`
[INFO] running `"docker" "rm" "-f" "ff6c9b3037db5c54f73e59afea5369cb945b2ce4c9e02c63369249021c8d29e9"`
[INFO] [stdout] ff6c9b3037db5c54f73e59afea5369cb945b2ce4c9e02c63369249021c8d29e9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a1408dcaa2846bb72ee4432388e2e17cce7e643b127c31cd89a505cb66a49c52
[INFO] running `"docker" "start" "-a" "a1408dcaa2846bb72ee4432388e2e17cce7e643b127c31cd89a505cb66a49c52"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling runner v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected item, found keyword `let`
[INFO] [stderr]  --> examples/regex.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | let re = Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();
[INFO] [stderr]   | ^^^ expected item
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `runner`.
[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: expected item, found keyword `let`
[INFO] [stderr]  --> examples/read.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | let code = fs::read_to_string("read.rs")?;
[INFO] [stderr]   | ^^^ expected item
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `runner`.
[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: expected item, found keyword `let`
[INFO] [stderr]  --> examples/filetime.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | let metadata = fs::metadata("filetime.rs").unwrap();
[INFO] [stderr]   | ^^^ expected item
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `runner`.
[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: macro expansion ignores token `{` and any following
[INFO] [stderr]    | 
[INFO] [stderr]   ::: examples/hello.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  |   println!("hello, world!");
[INFO] [stderr]    |   -------------------------- caused by the macro expansion here
[INFO] [stderr]    |
[INFO] [stderr]    = note: the usage of `println!` is likely invalid in item context
[INFO] [stderr] 
[INFO] [stderr] error: macro expansion ignores token `{` and any following
[INFO] [stderr]    | 
[INFO] [stderr]   ::: examples/json.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / println!("{}",
[INFO] [stderr] 5  | |     json! ({
[INFO] [stderr] 6  | |         "hello": 42,
[INFO] [stderr] 7  | |     })
[INFO] [stderr] 8  | | );
[INFO] [stderr]    | |__- caused by the macro expansion here
[INFO] [stderr]    |
[INFO] [stderr]    = note: the usage of `println!` is likely invalid in item context
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `hello`
[INFO] [stderr]  --> examples/hello.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | println!("hello, world!");
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ consider adding a `main` function to `examples/hello.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `runner`.
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/crate_utils.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / lazy_static! {
[INFO] [stderr] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stderr] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/crate_utils.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / lazy_static! {
[INFO] [stderr] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stderr] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `serde_json`
[INFO] [stderr]  --> examples/json.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serde_json::json;
[INFO] [stderr]   |     ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `json`
[INFO] [stderr]  --> examples/json.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | / use serde_json::json;
[INFO] [stderr] 3 | |
[INFO] [stderr] 4 | | println!("{}",
[INFO] [stderr] 5 | |     json! ({
[INFO] [stderr] 6 | |         "hello": 42,
[INFO] [stderr] 7 | |     })
[INFO] [stderr] 8 | | );
[INFO] [stderr]   | |__^ consider adding a `main` function to `examples/json.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0601.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `runner`.
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a1408dcaa2846bb72ee4432388e2e17cce7e643b127c31cd89a505cb66a49c52"`
[INFO] running `"docker" "rm" "-f" "a1408dcaa2846bb72ee4432388e2e17cce7e643b127c31cd89a505cb66a49c52"`
[INFO] [stdout] a1408dcaa2846bb72ee4432388e2e17cce7e643b127c31cd89a505cb66a49c52