[INFO] cloning repository https://github.com/NatTuck/meatball
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNatTuck%2Fmeatball'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14c81418bb1aaeea96385cbe7bc05cd465dfce2f
[INFO] checking NatTuck/meatball against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNatTuck%2Fmeatball" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NatTuck/meatball on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NatTuck/meatball already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-demangle v0.1.9
[INFO] [stderr]   Downloaded lazy_static v1.0.2
[INFO] [stderr]   Downloaded aho-corasick v0.6.6
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eb91c684ae566eb9e581c7e514b66689a761bcd04efbc7d05bebd1de988b53d
[INFO] running `Command { std: "docker" "start" "-a" "0eb91c684ae566eb9e581c7e514b66689a761bcd04efbc7d05bebd1de988b53d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eb91c684ae566eb9e581c7e514b66689a761bcd04efbc7d05bebd1de988b53d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb91c684ae566eb9e581c7e514b66689a761bcd04efbc7d05bebd1de988b53d", kill_on_drop: false }`
[INFO] [stdout] 0eb91c684ae566eb9e581c7e514b66689a761bcd04efbc7d05bebd1de988b53d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b5ba974dce5be0d44f9a2ed3fbeb2bf2831fc5cfe9d8dd159c26b0792c975b8
[INFO] running `Command { std: "docker" "start" "-a" "3b5ba974dce5be0d44f9a2ed3fbeb2bf2831fc5cfe9d8dd159c26b0792c975b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking meatball v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `builtins::Builtin`
[INFO] [stdout]  --> src/program.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use builtins::Builtin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `builtins::Builtin`
[INFO] [stdout]  --> src/program.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use builtins::Builtin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/parse.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | /     lazy_static! {
[INFO] [stdout] 90 | |         static ref WSP: Regex = Regex::new(r"^\s+").unwrap();
[INFO] [stdout] 91 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/parse.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | /     lazy_static! {
[INFO] [stdout] 90 | |         static ref WSP: Regex = Regex::new(r"^\s+").unwrap();
[INFO] [stdout] 91 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/parse.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     lazy_static! {
[INFO] [stdout] 116 | |         static ref PAR: Regex = Regex::new(r"^[\(\[\)\]]").unwrap();
[INFO] [stdout] 117 | |         static ref F64: Regex = Regex::new(r"^\d+\.\d*").unwrap();
[INFO] [stdout] 118 | |         static ref I64: Regex = Regex::new(r"^\d+").unwrap();
[INFO] [stdout] 119 | |         static ref SYM: Regex =
[INFO] [stdout] 120 | |             Regex::new(r#"^[\p{L}_+\-!?][\p{L}\p{N}_+\-!?]*"#).unwrap();
[INFO] [stdout] 121 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zero_expr` is never used
[INFO] [stdout]   --> src/parse.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn zero_expr() -> Ast {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Cond` and `Func` are never constructed
[INFO] [stdout]   --> src/program.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub enum Expr {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 30 |     Cond(Vec<(Expr, Expr)>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     Func(Box<Func>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ast2var` is never used
[INFO] [stdout]   --> src/program.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn ast2var(ast: &[Ast]) -> Result<(String, Expr)> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zero_expr` is never used
[INFO] [stdout]   --> src/parse.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn zero_expr() -> Ast {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Cond` and `Func` are never constructed
[INFO] [stdout]   --> src/program.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub enum Expr {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 30 |     Cond(Vec<(Expr, Expr)>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     Func(Box<Func>),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ast2var` is never used
[INFO] [stdout]   --> src/program.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn ast2var(ast: &[Ast]) -> Result<(String, Expr)> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "3b5ba974dce5be0d44f9a2ed3fbeb2bf2831fc5cfe9d8dd159c26b0792c975b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b5ba974dce5be0d44f9a2ed3fbeb2bf2831fc5cfe9d8dd159c26b0792c975b8", kill_on_drop: false }`
[INFO] [stdout] 3b5ba974dce5be0d44f9a2ed3fbeb2bf2831fc5cfe9d8dd159c26b0792c975b8
[INFO] checking NatTuck/meatball against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNatTuck%2Fmeatball" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NatTuck/meatball on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/NatTuck/meatball already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab7970d484669aa4aa65997f0f3d1a749502ffd4b9d54baea15daf0b8328da21
[INFO] running `Command { std: "docker" "start" "-a" "ab7970d484669aa4aa65997f0f3d1a749502ffd4b9d54baea15daf0b8328da21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab7970d484669aa4aa65997f0f3d1a749502ffd4b9d54baea15daf0b8328da21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7970d484669aa4aa65997f0f3d1a749502ffd4b9d54baea15daf0b8328da21", kill_on_drop: false }`
[INFO] [stdout] ab7970d484669aa4aa65997f0f3d1a749502ffd4b9d54baea15daf0b8328da21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03efc41b75b35ccbe90da646dbb8de9c72b87b712bb65d808abb80ac38c152ec
[INFO] running `Command { std: "docker" "start" "-a" "03efc41b75b35ccbe90da646dbb8de9c72b87b712bb65d808abb80ac38c152ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.0.2/src/exec.rs:754:13
[INFO] [stdout]     |
[INFO] [stdout] 754 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 755 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 756 | |                 self.cache,
[INFO] [stdout] 757 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 764 | |                 Quit => return Some(Quit),
[INFO] [stdout] 765 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "03efc41b75b35ccbe90da646dbb8de9c72b87b712bb65d808abb80ac38c152ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03efc41b75b35ccbe90da646dbb8de9c72b87b712bb65d808abb80ac38c152ec", kill_on_drop: false }`
[INFO] [stdout] 03efc41b75b35ccbe90da646dbb8de9c72b87b712bb65d808abb80ac38c152ec