[INFO] cloning repository https://github.com/NatTuck/meatball
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NatTuck/meatball" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNatTuck%2Fmeatball"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNatTuck%2Fmeatball'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 14c81418bb1aaeea96385cbe7bc05cd465dfce2f
[INFO] checking NatTuck/meatball against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNatTuck%2Fmeatball" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NatTuck/meatball on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/NatTuck/meatball
[INFO] finished tweaking git repo https://github.com/NatTuck/meatball
[INFO] tweaked toml for git repo https://github.com/NatTuck/meatball written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/NatTuck/meatball already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8551f2e74b2e16a5138df743cb83b12eb2f633c6798e32413bc779901132ec81
[INFO] running `"docker" "start" "-a" "8551f2e74b2e16a5138df743cb83b12eb2f633c6798e32413bc779901132ec81"`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking meatball v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `builtins::Builtin`
[INFO] [stderr]  --> src/program.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use builtins::Builtin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `builtins::Builtin`
[INFO] [stderr]  --> src/program.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use builtins::Builtin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/parse.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 | /     lazy_static! {
[INFO] [stderr] 90 | |         static ref WSP: Regex = Regex::new(r"^\s+").unwrap();
[INFO] [stderr] 91 | |     }
[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/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/parse.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 | /     lazy_static! {
[INFO] [stderr] 90 | |         static ref WSP: Regex = Regex::new(r"^\s+").unwrap();
[INFO] [stderr] 91 | |     }
[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/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/parse.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | /     lazy_static! {
[INFO] [stderr] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stderr] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stderr] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stderr] 119 | |         static ref SYM: Regex =
[INFO] [stderr] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stderr] 121 | |     }
[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: function is never used: `zero_expr`
[INFO] [stderr]   --> src/parse.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn zero_expr() -> Ast {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cond`
[INFO] [stderr]   --> src/program.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Cond(Vec<(Expr, Expr)>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Func`
[INFO] [stderr]   --> src/program.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     Func(Box<Func>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ast2var`
[INFO] [stderr]   --> src/program.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn ast2var(ast: &[Ast]) -> Result<(String, Expr)> {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `zero_expr`
[INFO] [stderr]   --> src/parse.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn zero_expr() -> Ast {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cond`
[INFO] [stderr]   --> src/program.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Cond(Vec<(Expr, Expr)>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Func`
[INFO] [stderr]   --> src/program.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     Func(Box<Func>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ast2var`
[INFO] [stderr]   --> src/program.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn ast2var(ast: &[Ast]) -> Result<(String, Expr)> {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `"docker" "inspect" "8551f2e74b2e16a5138df743cb83b12eb2f633c6798e32413bc779901132ec81"`
[INFO] running `"docker" "rm" "-f" "8551f2e74b2e16a5138df743cb83b12eb2f633c6798e32413bc779901132ec81"`
[INFO] [stdout] 8551f2e74b2e16a5138df743cb83b12eb2f633c6798e32413bc779901132ec81