[INFO] fetching crate pseudocode 0.1.8...
[INFO] checking pseudocode-0.1.8 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] extracting crate pseudocode 0.1.8 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate pseudocode 0.1.8 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pseudocode 0.1.8
[INFO] finished tweaking crates.io crate pseudocode 0.1.8
[INFO] tweaked toml for crates.io crate pseudocode 0.1.8 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate pseudocode 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74e51ebbdd34d4d9357591fc098c6e87d6b64ed6c4745d903e511ca567f2c274
[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" "74e51ebbdd34d4d9357591fc098c6e87d6b64ed6c4745d903e511ca567f2c274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74e51ebbdd34d4d9357591fc098c6e87d6b64ed6c4745d903e511ca567f2c274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74e51ebbdd34d4d9357591fc098c6e87d6b64ed6c4745d903e511ca567f2c274", kill_on_drop: false }`
[INFO] [stdout] 74e51ebbdd34d4d9357591fc098c6e87d6b64ed6c4745d903e511ca567f2c274
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e9aa66b0e385f6b4aa4c5e6a4143dd0af4591925a1e89bd1042070c863f1efa
[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" "6e9aa66b0e385f6b4aa4c5e6a4143dd0af4591925a1e89bd1042070c863f1efa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking pseudocode v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `dump`
[INFO] [stdout]    --> src/lib.rs:317:8
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn dump(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump`
[INFO] [stdout]    --> src/lib.rs:317:8
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn dump(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:958:9
[INFO] [stdout]     |
[INFO] [stdout] 958 | /         parses_to! {
[INFO] [stdout] 959 | |             parser: PseudocodeParser,
[INFO] [stdout] 960 | |             input: "my_variable",
[INFO] [stdout] 961 | |             rule: Rule::identifier,
[INFO] [stdout] 962 | |             tokens: [identifier(0, 11)]
[INFO] [stdout] 963 | |         }
[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: the panic!() macro supports formatting, so there's no need for the format!() macro here
[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/lib.rs:958:9
[INFO] [stdout]     |
[INFO] [stdout] 958 | /         parses_to! {
[INFO] [stdout] 959 | |             parser: PseudocodeParser,
[INFO] [stdout] 960 | |             input: "my_variable",
[INFO] [stdout] 961 | |             rule: Rule::identifier,
[INFO] [stdout] 962 | |             tokens: [identifier(0, 11)]
[INFO] [stdout] 963 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[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/lib.rs:965:9
[INFO] [stdout]     |
[INFO] [stdout] 965 | /         parses_to! {
[INFO] [stdout] 966 | |             parser: PseudocodeParser,
[INFO] [stdout] 967 | |             input: "\"hello world\"",
[INFO] [stdout] 968 | |             rule: Rule::string,
[INFO] [stdout] 969 | |             tokens: [string(0, 13, [inner(1, 12)])]
[INFO] [stdout] 970 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[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/lib.rs:965:9
[INFO] [stdout]     |
[INFO] [stdout] 965 | /         parses_to! {
[INFO] [stdout] 966 | |             parser: PseudocodeParser,
[INFO] [stdout] 967 | |             input: "\"hello world\"",
[INFO] [stdout] 968 | |             rule: Rule::string,
[INFO] [stdout] 969 | |             tokens: [string(0, 13, [inner(1, 12)])]
[INFO] [stdout] 970 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.15s
[INFO] running `Command { std: "docker" "inspect" "6e9aa66b0e385f6b4aa4c5e6a4143dd0af4591925a1e89bd1042070c863f1efa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e9aa66b0e385f6b4aa4c5e6a4143dd0af4591925a1e89bd1042070c863f1efa", kill_on_drop: false }`
[INFO] [stdout] 6e9aa66b0e385f6b4aa4c5e6a4143dd0af4591925a1e89bd1042070c863f1efa