[INFO] fetching crate rtlola-frontend 0.3.5...
[INFO] checking rtlola-frontend-0.3.5 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate rtlola-frontend 0.3.5 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rtlola-frontend 0.3.5 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtlola-frontend 0.3.5
[INFO] finished tweaking crates.io crate rtlola-frontend 0.3.5
[INFO] tweaked toml for crates.io crate rtlola-frontend 0.3.5 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate rtlola-frontend 0.3.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e35de53b6f32e6b6acee37de2ad9e4ee23a1119e5fa66ee5efe89a76b7c4b892
[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" "e35de53b6f32e6b6acee37de2ad9e4ee23a1119e5fa66ee5efe89a76b7c4b892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e35de53b6f32e6b6acee37de2ad9e4ee23a1119e5fa66ee5efe89a76b7c4b892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35de53b6f32e6b6acee37de2ad9e4ee23a1119e5fa66ee5efe89a76b7c4b892", kill_on_drop: false }`
[INFO] [stdout] e35de53b6f32e6b6acee37de2ad9e4ee23a1119e5fa66ee5efe89a76b7c4b892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36d63b953955b0cb70856796cd915be6f67fab0619a482682b0e33c813cb79df
[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" "36d63b953955b0cb70856796cd915be6f67fab0619a482682b0e33c813cb79df", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking ena v0.13.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking color-backtrace v0.3.0
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking simplelog v0.7.6
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking uom v0.31.0
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking rtlola-frontend v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/ast/conversion.rs:333:10
[INFO] [stdout]     |
[INFO] [stdout] 333 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1025:9
[INFO] [stdout]      |
[INFO] [stdout] 1025 | /         parses_to! {
[INFO] [stdout] 1026 | |             parser: LolaParser,
[INFO] [stdout] 1027 | |             input:  "constant five : Int := 5",
[INFO] [stdout] 1028 | |             rule:   Rule::ConstantStream,
[INFO] [stdout] ...    |
[INFO] [stdout] 1041 | |             ]
[INFO] [stdout] 1042 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1025:9
[INFO] [stdout]      |
[INFO] [stdout] 1025 | /         parses_to! {
[INFO] [stdout] 1026 | |             parser: LolaParser,
[INFO] [stdout] 1027 | |             input:  "constant five : Int := 5",
[INFO] [stdout] 1028 | |             rule:   Rule::ConstantStream,
[INFO] [stdout] ...    |
[INFO] [stdout] 1041 | |             ]
[INFO] [stdout] 1042 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1067:9
[INFO] [stdout]      |
[INFO] [stdout] 1067 | /         parses_to! {
[INFO] [stdout] 1068 | |             parser: LolaParser,
[INFO] [stdout] 1069 | |             input:  "input in: Int",
[INFO] [stdout] 1070 | |             rule:   Rule::InputStream,
[INFO] [stdout] ...    |
[INFO] [stdout] 1078 | |             ]
[INFO] [stdout] 1079 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1067:9
[INFO] [stdout]      |
[INFO] [stdout] 1067 | /         parses_to! {
[INFO] [stdout] 1068 | |             parser: LolaParser,
[INFO] [stdout] 1069 | |             input:  "input in: Int",
[INFO] [stdout] 1070 | |             rule:   Rule::InputStream,
[INFO] [stdout] ...    |
[INFO] [stdout] 1078 | |             ]
[INFO] [stdout] 1079 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1107 | /         parses_to! {
[INFO] [stdout] 1108 | |             parser: LolaParser,
[INFO] [stdout] 1109 | |             input:  "output out: Int := in + 1",
[INFO] [stdout] 1110 | |             rule:   Rule::OutputStream,
[INFO] [stdout] ...    |
[INFO] [stdout] 1127 | |             ]
[INFO] [stdout] 1128 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1107:9
[INFO] [stdout]      |
[INFO] [stdout] 1107 | /         parses_to! {
[INFO] [stdout] 1108 | |             parser: LolaParser,
[INFO] [stdout] 1109 | |             input:  "output out: Int := in + 1",
[INFO] [stdout] 1110 | |             rule:   Rule::OutputStream,
[INFO] [stdout] ...    |
[INFO] [stdout] 1127 | |             ]
[INFO] [stdout] 1128 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1144:9
[INFO] [stdout]      |
[INFO] [stdout] 1144 | /         parses_to! {
[INFO] [stdout] 1145 | |             parser: LolaParser,
[INFO] [stdout] 1146 | |             input:  "trigger in != out \"some message\"",
[INFO] [stdout] 1147 | |             rule:   Rule::Trigger,
[INFO] [stdout] ...    |
[INFO] [stdout] 1157 | |             ]
[INFO] [stdout] 1158 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1144:9
[INFO] [stdout]      |
[INFO] [stdout] 1144 | /         parses_to! {
[INFO] [stdout] 1145 | |             parser: LolaParser,
[INFO] [stdout] 1146 | |             input:  "trigger in != out \"some message\"",
[INFO] [stdout] 1147 | |             rule:   Rule::Trigger,
[INFO] [stdout] ...    |
[INFO] [stdout] 1157 | |             ]
[INFO] [stdout] 1158 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1405:9
[INFO] [stdout]      |
[INFO] [stdout] 1405 | /         parses_to! {
[INFO] [stdout] 1406 | |             parser: LolaParser,
[INFO] [stdout] 1407 | |             input:  "!(fast || false) && fast",
[INFO] [stdout] 1408 | |             rule:   Rule::Expr,
[INFO] [stdout] ...    |
[INFO] [stdout] 1428 | |             ]
[INFO] [stdout] 1429 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/parse.rs:1405:9
[INFO] [stdout]      |
[INFO] [stdout] 1405 | /         parses_to! {
[INFO] [stdout] 1406 | |             parser: LolaParser,
[INFO] [stdout] 1407 | |             input:  "!(fast || false) && fast",
[INFO] [stdout] 1408 | |             rule:   Rule::Expr,
[INFO] [stdout] ...    |
[INFO] [stdout] 1428 | |             ]
[INFO] [stdout] 1429 | |         };
[INFO] [stdout]      | |__________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "36d63b953955b0cb70856796cd915be6f67fab0619a482682b0e33c813cb79df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d63b953955b0cb70856796cd915be6f67fab0619a482682b0e33c813cb79df", kill_on_drop: false }`
[INFO] [stdout] 36d63b953955b0cb70856796cd915be6f67fab0619a482682b0e33c813cb79df