[INFO] cloning repository https://github.com/blakehawkins/compilethyme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blakehawkins/compilethyme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakehawkins%2Fcompilethyme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakehawkins%2Fcompilethyme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2dc1dbd6a20733aabc1f48dbbc5744f651a79d9e
[INFO] checking blakehawkins/compilethyme against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakehawkins%2Fcompilethyme" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blakehawkins/compilethyme on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blakehawkins/compilethyme
[INFO] finished tweaking git repo https://github.com/blakehawkins/compilethyme
[INFO] tweaked toml for git repo https://github.com/blakehawkins/compilethyme written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/blakehawkins/compilethyme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc4096a3b2ab12e2e7f7b9233ed44320414a4bf2edc72fad912f28747919f623
[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" "bc4096a3b2ab12e2e7f7b9233ed44320414a4bf2edc72fad912f28747919f623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc4096a3b2ab12e2e7f7b9233ed44320414a4bf2edc72fad912f28747919f623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc4096a3b2ab12e2e7f7b9233ed44320414a4bf2edc72fad912f28747919f623", kill_on_drop: false }`
[INFO] [stdout] bc4096a3b2ab12e2e7f7b9233ed44320414a4bf2edc72fad912f28747919f623
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86acab301ac74f97ce19d24f388a515d674882337c9a2bf93585e3e74f3c0d0a
[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" "86acab301ac74f97ce19d24f388a515d674882337c9a2bf93585e3e74f3c0d0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling regex-syntax v0.6.6
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling strsim v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling compilethyme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator1.rs:514:5
[INFO] [stdout]     |
[INFO] [stdout] 514 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator2.rs:514:5
[INFO] [stdout]     |
[INFO] [stdout] 514 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator2.rs:525:5
[INFO] [stdout]     |
[INFO] [stdout] 525 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator2.rs:538:5
[INFO] [stdout]     |
[INFO] [stdout] 538 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/emoji.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/emoji.rs:500:5
[INFO] [stdout]     |
[INFO] [stdout] 500 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:556:5
[INFO] [stdout]     |
[INFO] [stdout] 556 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:567:5
[INFO] [stdout]     |
[INFO] [stdout] 567 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:580:5
[INFO] [stdout]     |
[INFO] [stdout] 580 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:782:5
[INFO] [stdout]     |
[INFO] [stdout] 782 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:819:5
[INFO] [stdout]     |
[INFO] [stdout] 819 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:856:5
[INFO] [stdout]     |
[INFO] [stdout] 856 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:867:5
[INFO] [stdout]     |
[INFO] [stdout] 867 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:880:5
[INFO] [stdout]     |
[INFO] [stdout] 880 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Type`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/ast_parser.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ast::{Op, Expr, Term, Type};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/ast_parser.rs:1728:5
[INFO] [stdout]      |
[INFO] [stdout] 1728 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/ast_parser.rs:1739:5
[INFO] [stdout]      |
[INFO] [stdout] 1739 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use] extern crate structopt;
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator1.rs:514:5
[INFO] [stdout]     |
[INFO] [stdout] 514 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator2.rs:514:5
[INFO] [stdout]     |
[INFO] [stdout] 514 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator2.rs:525:5
[INFO] [stdout]     |
[INFO] [stdout] 525 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator2.rs:538:5
[INFO] [stdout]     |
[INFO] [stdout] 538 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/emoji.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/emoji.rs:500:5
[INFO] [stdout]     |
[INFO] [stdout] 500 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:556:5
[INFO] [stdout]     |
[INFO] [stdout] 556 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:567:5
[INFO] [stdout]     |
[INFO] [stdout] 567 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/identifier.rs:580:5
[INFO] [stdout]     |
[INFO] [stdout] 580 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:782:5
[INFO] [stdout]     |
[INFO] [stdout] 782 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:819:5
[INFO] [stdout]     |
[INFO] [stdout] 819 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:856:5
[INFO] [stdout]     |
[INFO] [stdout] 856 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:867:5
[INFO] [stdout]     |
[INFO] [stdout] 867 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/calculator3.rs:880:5
[INFO] [stdout]     |
[INFO] [stdout] 880 |     (__0)
[INFO] [stdout]     |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Type`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/ast_parser.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ast::{Op, Expr, Term, Type};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/ast_parser.rs:1728:5
[INFO] [stdout]      |
[INFO] [stdout] 1728 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/compilethyme-e5c26c9b093471c4/out/ast_parser.rs:1739:5
[INFO] [stdout]      |
[INFO] [stdout] 1739 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use] extern crate structopt;
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compilethyme`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "86acab301ac74f97ce19d24f388a515d674882337c9a2bf93585e3e74f3c0d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86acab301ac74f97ce19d24f388a515d674882337c9a2bf93585e3e74f3c0d0a", kill_on_drop: false }`
[INFO] [stdout] 86acab301ac74f97ce19d24f388a515d674882337c9a2bf93585e3e74f3c0d0a