[INFO] cloning repository https://github.com/oyas/rust-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oyas/rust-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foyas%2Frust-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foyas%2Frust-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ff9a1d5bd39b503a169e683f61d3495f4bdc4f3
[INFO] testing oyas/rust-lang against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foyas%2Frust-lang" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oyas/rust-lang on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oyas/rust-lang
[INFO] finished tweaking git repo https://github.com/oyas/rust-lang
[INFO] tweaked toml for git repo https://github.com/oyas/rust-lang written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/oyas/rust-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 636c9dbd73e4580b93e97aaeca37453709969da6be0fc97804d20d2e476bfe90
[INFO] running `Command { std: "docker" "start" "-a" "636c9dbd73e4580b93e97aaeca37453709969da6be0fc97804d20d2e476bfe90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "636c9dbd73e4580b93e97aaeca37453709969da6be0fc97804d20d2e476bfe90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "636c9dbd73e4580b93e97aaeca37453709969da6be0fc97804d20d2e476bfe90", kill_on_drop: false }`
[INFO] [stdout] 636c9dbd73e4580b93e97aaeca37453709969da6be0fc97804d20d2e476bfe90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e2b9d6a8585cd9cf89013b177fbf702c757d64cca78650d60f0a5f4ab13eba9
[INFO] running `Command { std: "docker" "start" "-a" "7e2b9d6a8585cd9cf89013b177fbf702c757d64cca78650d60f0a5f4ab13eba9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser/parser.rs:169:29
[INFO] [stdout]     |
[INFO] [stdout] 169 | ...                   format!("Invalid syntax: unexpected element {:?}.", next.value)
[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 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] 169 |                             "Invalid syntax: unexpected element {:?}.", next.value
[INFO] [stdout]     |                            --                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:229:79
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:231:78
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 None => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 None => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:256:80
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     _ => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     _ => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:258:79
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 None => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 None => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:272:80
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     _ => panic!("Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     _ => panic!("{}", "Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:274:77
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 None => panic!("Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 None => panic!("{}", "Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/parser/element.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 262 |             &child.print_with_prefix(fmt, &format!("{}. ", prefix));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "7e2b9d6a8585cd9cf89013b177fbf702c757d64cca78650d60f0a5f4ab13eba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2b9d6a8585cd9cf89013b177fbf702c757d64cca78650d60f0a5f4ab13eba9", kill_on_drop: false }`
[INFO] [stdout] 7e2b9d6a8585cd9cf89013b177fbf702c757d64cca78650d60f0a5f4ab13eba9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62bb4a31c2d43e6b9ecb91cc5931f4f14153fd6ed4b38e4d23a5d2c1a40f57ce
[INFO] running `Command { std: "docker" "start" "-a" "62bb4a31c2d43e6b9ecb91cc5931f4f14153fd6ed4b38e4d23a5d2c1a40f57ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser/parser.rs:169:29
[INFO] [stdout]     |
[INFO] [stdout] 169 | ...                   format!("Invalid syntax: unexpected element {:?}.", next.value)
[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 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] 169 |                             "Invalid syntax: unexpected element {:?}.", next.value
[INFO] [stdout]     |                            --                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:229:79
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:231:78
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 None => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 None => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:256:80
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     _ => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     _ => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:258:79
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 None => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 None => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:272:80
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     _ => panic!("Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     _ => panic!("{}", "Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:274:77
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 None => panic!("Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 None => panic!("{}", "Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/parser/element.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 262 |             &child.print_with_prefix(fmt, &format!("{}. ", prefix));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/examples.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |         assert!(result.is_some(), format!("Failed to run {}.", file_path));
[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 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] 10 |         assert!(result.is_some(), "Failed to run {}.", file_path);
[INFO] [stdout]    |                                  --                            --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser/parser.rs:169:29
[INFO] [stdout]     |
[INFO] [stdout] 169 | ...                   format!("Invalid syntax: unexpected element {:?}.", next.value)
[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 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] 169 |                             "Invalid syntax: unexpected element {:?}.", next.value
[INFO] [stdout]     |                            --                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:229:79
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:231:78
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 None => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 None => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:256:80
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     _ => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     _ => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:258:79
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 None => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 None => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:272:80
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     _ => panic!("Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     _ => panic!("{}", "Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parser/parser.rs:274:77
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 None => panic!("Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 None => panic!("{}", "Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/parser/element.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 262 |             &child.print_with_prefix(fmt, &format!("{}. ", prefix));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "62bb4a31c2d43e6b9ecb91cc5931f4f14153fd6ed4b38e4d23a5d2c1a40f57ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62bb4a31c2d43e6b9ecb91cc5931f4f14153fd6ed4b38e4d23a5d2c1a40f57ce", kill_on_drop: false }`
[INFO] [stdout] 62bb4a31c2d43e6b9ecb91cc5931f4f14153fd6ed4b38e4d23a5d2c1a40f57ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 46a2b6a6b08c8a8db599d51d7e18817f19e9a08bf30d0cfe7f98362df2727ed9
[INFO] running `Command { std: "docker" "start" "-a" "46a2b6a6b08c8a8db599d51d7e18817f19e9a08bf30d0cfe7f98362df2727ed9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/parser/parser.rs:169:29
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 169 | ...                   format!("Invalid syntax: unexpected element {:?}.", next.value)
[INFO] [stdout] 
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 0 tests
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] 
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] 
[INFO] [stderr]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 169 |                             "Invalid syntax: unexpected element {:?}.", next.value
[INFO] [stderr]     |                            --                                                    --
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:229:79
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     _ => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                                                               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     _ => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:231:78
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 None => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                                                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 None => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:256:80
[INFO] [stderr]     |
[INFO] [stderr] 256 |                     _ => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                                                                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 256 |                     _ => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:258:79
[INFO] [stderr]     |
[INFO] [stderr] 258 |                 None => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                                                               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 258 |                 None => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:272:80
[INFO] [stderr]     |
[INFO] [stderr] 272 |                     _ => panic!("Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                                                                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 272 |                     _ => panic!("{}", "Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:274:77
[INFO] [stderr]     |
[INFO] [stderr] 274 |                 None => panic!("Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                                                             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 274 |                 None => panic!("{}", "Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/parser/element.rs:262:13
[INFO] [stderr]     |
[INFO] [stderr] 262 |             &child.print_with_prefix(fmt, &format!("{}. ", prefix));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/parser/parser.rs:169:29
[INFO] [stderr]     |
[INFO] [stderr] 169 | ...                   format!("Invalid syntax: unexpected element {:?}.", next.value)
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 169 |                             "Invalid syntax: unexpected element {:?}.", next.value
[INFO] [stderr]     |                            --                                                    --
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:229:79
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     _ => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                                                               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     _ => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:231:78
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 None => panic!("Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                                                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 None => panic!("{}", "Invalid syntax: operator 'if' couldn't find '{' token."),
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:256:80
[INFO] [stderr]     |
[INFO] [stderr] 256 |                     _ => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                                                                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 256 |                     _ => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:258:79
[INFO] [stderr]     |
[INFO] [stderr] 258 |                 None => panic!("Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                                                               ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 258 |                 None => panic!("{}", "Invalid syntax: operator 'for' couldn't find '{' token."),
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:272:80
[INFO] [stderr]     |
[INFO] [stderr] 272 |                     _ => panic!("Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                                                                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 272 |                     _ => panic!("{}", "Invalid syntax: operator 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]    --> src/parser/parser.rs:274:77
[INFO] [stderr]     |
[INFO] [stderr] 274 |                 None => panic!("Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                                                             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 274 |                 None => panic!("{}", "Invalid syntax: symbol 'fun' couldn't find '{' token."),
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/parser/element.rs:262:13
[INFO] [stderr]     |
[INFO] [stderr] 262 |             &child.print_with_prefix(fmt, &format!("{}. ", prefix));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> tests/examples.rs:10:35
[INFO] [stderr]    |
[INFO] [stderr] 10 |         assert!(result.is_some(), format!("Failed to run {}.", file_path));
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 10 |         assert!(result.is_some(), "Failed to run {}.", file_path);
[INFO] [stderr]    |                                  --                            --
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlang-34d63bfecd8e1c9e)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlang-c8039e4159f4bbef)
[INFO] [stderr]      Running tests/examples.rs (/opt/rustwide/target/debug/deps/examples-cd0f04342f1168f8)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests rustlang
[INFO] [stdout] test run_examples ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "46a2b6a6b08c8a8db599d51d7e18817f19e9a08bf30d0cfe7f98362df2727ed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a2b6a6b08c8a8db599d51d7e18817f19e9a08bf30d0cfe7f98362df2727ed9", kill_on_drop: false }`
[INFO] [stdout] 46a2b6a6b08c8a8db599d51d7e18817f19e9a08bf30d0cfe7f98362df2727ed9