[INFO] fetching crate igrepper 1.3.0...
[INFO] checking igrepper-1.3.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate igrepper 1.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate igrepper 1.3.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate igrepper 1.3.0
[INFO] finished tweaking crates.io crate igrepper 1.3.0
[INFO] tweaked toml for crates.io crate igrepper 1.3.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate igrepper 1.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2e353a7bd91f80da64008eccdd8b6abb44443a2add5ef54c930969ea8a06ee16
[INFO] running `Command { std: "docker" "start" "-a" "2e353a7bd91f80da64008eccdd8b6abb44443a2add5ef54c930969ea8a06ee16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e353a7bd91f80da64008eccdd8b6abb44443a2add5ef54c930969ea8a06ee16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e353a7bd91f80da64008eccdd8b6abb44443a2add5ef54c930969ea8a06ee16", kill_on_drop: false }`
[INFO] [stdout] 2e353a7bd91f80da64008eccdd8b6abb44443a2add5ef54c930969ea8a06ee16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95a9d9ff0aaa569d67834c9bf00958326b8af05284417fbc4b649ba5841533c2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "95a9d9ff0aaa569d67834c9bf00958326b8af05284417fbc4b649ba5841533c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling tokio v1.7.1
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking inotify v0.9.3
[INFO] [stderr]     Checking igrepper v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/igrepper/mod.rs:145:24
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 panic!(format!("Inotify error: {}", message));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 145 -                 panic!(format!("Inotify error: {}", message));
[INFO] [stdout] 145 +                 panic!("Inotify error: {}", message);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/igrepper/mod.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |         char_requester_tx.send(CharRequesterMessage::ReadyToReceiveChar);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `longest_line_length`
[INFO] [stdout]    --> src/igrepper/state.rs:518:13
[INFO] [stdout]     |
[INFO] [stdout] 518 |         let longest_line_length = 15;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_longest_line_length`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/igrepper/core.rs:313:25
[INFO] [stdout]     |
[INFO] [stdout] 313 | /                         format!(
[INFO] [stdout] 314 | |                             "Missing keys in test result: {:?}",
[INFO] [stdout] 315 | |                             missing_keys
[INFO] [stdout] 316 | |                                 .iter()
[INFO] [stdout] ...   |
[INFO] [stdout] 319 | |                                 .join(", ")
[INFO] [stdout] 320 | |                         )
[INFO] [stdout]     | |_________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 313 ~                         
[INFO] [stdout] 314 |                             "Missing keys in test result: {:?}",
[INFO] [stdout] 315 |                             missing_keys
[INFO] [stdout] 316 |                                 .iter()
[INFO] [stdout] 317 |                                 .cloned()
[INFO] [stdout] 318 |                                 .collect::<Vec<String>>()
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/igrepper/core.rs:324:25
[INFO] [stdout]     |
[INFO] [stdout] 324 | /                         format!(
[INFO] [stdout] 325 | |                             "Unexpected keys in test result: {:?}",
[INFO] [stdout] 326 | |                             unexpected_keys
[INFO] [stdout] 327 | |                                 .iter()
[INFO] [stdout] ...   |
[INFO] [stdout] 330 | |                                 .join(", ")
[INFO] [stdout] 331 | |                         )
[INFO] [stdout]     | |_________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 324 ~                         
[INFO] [stdout] 325 |                             "Unexpected keys in test result: {:?}",
[INFO] [stdout] 326 |                             unexpected_keys
[INFO] [stdout] 327 |                                 .iter()
[INFO] [stdout] 328 |                                 .cloned()
[INFO] [stdout] 329 |                                 .collect::<Vec<String>>()
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/igrepper/mod.rs:145:24
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 panic!(format!("Inotify error: {}", message));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 145 -                 panic!(format!("Inotify error: {}", message));
[INFO] [stdout] 145 +                 panic!("Inotify error: {}", message);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/igrepper/mod.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |         char_requester_tx.send(CharRequesterMessage::ReadyToReceiveChar);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.76s
[INFO] running `Command { std: "docker" "inspect" "95a9d9ff0aaa569d67834c9bf00958326b8af05284417fbc4b649ba5841533c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a9d9ff0aaa569d67834c9bf00958326b8af05284417fbc4b649ba5841533c2", kill_on_drop: false }`
[INFO] [stdout] 95a9d9ff0aaa569d67834c9bf00958326b8af05284417fbc4b649ba5841533c2
