[INFO] updating cached repository https://github.com/milesand/calculator-the-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa074792688f3ccc44a51a3e5b7af26239e9751d
[INFO] testing milesand/calculator-the-solver against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilesand%2Fcalculator-the-solver" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/milesand/calculator-the-solver on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/milesand/calculator-the-solver
[INFO] finished tweaking git repo https://github.com/milesand/calculator-the-solver
[INFO] tweaked toml for git repo https://github.com/milesand/calculator-the-solver written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/milesand/calculator-the-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e25f0d1ac3f1d27622ef8fc639676459db9f8f4fe4c5d52acf29465348bfcee
[INFO] running `Command { std: "docker" "start" "-a" "1e25f0d1ac3f1d27622ef8fc639676459db9f8f4fe4c5d52acf29465348bfcee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e25f0d1ac3f1d27622ef8fc639676459db9f8f4fe4c5d52acf29465348bfcee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e25f0d1ac3f1d27622ef8fc639676459db9f8f4fe4c5d52acf29465348bfcee", kill_on_drop: false }`
[INFO] [stdout] 1e25f0d1ac3f1d27622ef8fc639676459db9f8f4fe4c5d52acf29465348bfcee
[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" "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b84fa548eab4abe744ca87f385e1667276076dae8bc0edea23758c76630c55e7
[INFO] running `Command { std: "docker" "start" "-a" "b84fa548eab4abe744ca87f385e1667276076dae8bc0edea23758c76630c55e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling regex v0.2.5
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling num-bigint v0.1.41
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]    Compiling num-rational v0.1.41
[INFO] [stderr]    Compiling num v0.1.41
[INFO] [stderr]    Compiling calculator-the-solver v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `OpKind` is imported redundantly
[INFO] [stdout]    --> src/op.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | / enum OpKind {
[INFO] [stdout] 18  | |     Add(i32),
[INFO] [stdout] 19  | |     Mul(i32),
[INFO] [stdout] 20  | |     Div(i32),
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stdout] 28  | | }
[INFO] [stdout]     | |_- the item `OpKind` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 102 |           use self::OpKind;
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Op` is imported redundantly
[INFO] [stdout]    --> src/op.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 12  | / pub struct Op {
[INFO] [stdout] 13  | |     inner: OpKind,
[INFO] [stdout] 14  | | }
[INFO] [stdout]     | |_- the item `Op` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 195 |           use self::Op;
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OpKind` is imported redundantly
[INFO] [stdout]    --> src/op.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | / enum OpKind {
[INFO] [stdout] 18  | |     Add(i32),
[INFO] [stdout] 19  | |     Mul(i32),
[INFO] [stdout] 20  | |     Div(i32),
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stdout] 28  | | }
[INFO] [stdout]     | |_- the item `OpKind` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 247 |           use self::OpKind;
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]    --> src/op.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 | /         lazy_static! {
[INFO] [stdout] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stdout] 199 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.26s
[INFO] running `Command { std: "docker" "inspect" "b84fa548eab4abe744ca87f385e1667276076dae8bc0edea23758c76630c55e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b84fa548eab4abe744ca87f385e1667276076dae8bc0edea23758c76630c55e7", kill_on_drop: false }`
[INFO] [stdout] b84fa548eab4abe744ca87f385e1667276076dae8bc0edea23758c76630c55e7
[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" "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e6b154d57bf3a012e0a0fb05e9e612d6244883f7f26a36d4df3d0f7864cfc5f
[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" "2e6b154d57bf3a012e0a0fb05e9e612d6244883f7f26a36d4df3d0f7864cfc5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling calculator-the-solver v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `OpKind` is imported redundantly
[INFO] [stdout]    --> src/op.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | / enum OpKind {
[INFO] [stdout] 18  | |     Add(i32),
[INFO] [stdout] 19  | |     Mul(i32),
[INFO] [stdout] 20  | |     Div(i32),
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stdout] 28  | | }
[INFO] [stdout]     | |_- the item `OpKind` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 102 |           use self::OpKind;
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Op` is imported redundantly
[INFO] [stdout]    --> src/op.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 12  | / pub struct Op {
[INFO] [stdout] 13  | |     inner: OpKind,
[INFO] [stdout] 14  | | }
[INFO] [stdout]     | |_- the item `Op` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 195 |           use self::Op;
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OpKind` is imported redundantly
[INFO] [stdout]    --> src/op.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | / enum OpKind {
[INFO] [stdout] 18  | |     Add(i32),
[INFO] [stdout] 19  | |     Mul(i32),
[INFO] [stdout] 20  | |     Div(i32),
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stdout] 28  | | }
[INFO] [stdout]     | |_- the item `OpKind` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 247 |           use self::OpKind;
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]    --> src/op.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 | /         lazy_static! {
[INFO] [stdout] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stdout] 199 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OpKind` is imported redundantly
[INFO] [stdout]    --> src/op.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | / enum OpKind {
[INFO] [stdout] 18  | |     Add(i32),
[INFO] [stdout] 19  | |     Mul(i32),
[INFO] [stdout] 20  | |     Div(i32),
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stdout] 28  | | }
[INFO] [stdout]     | |_- the item `OpKind` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 102 |           use self::OpKind;
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Op` is imported redundantly
[INFO] [stdout]    --> src/op.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 12  | / pub struct Op {
[INFO] [stdout] 13  | |     inner: OpKind,
[INFO] [stdout] 14  | | }
[INFO] [stdout]     | |_- the item `Op` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 195 |           use self::Op;
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OpKind` is imported redundantly
[INFO] [stdout]    --> src/op.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | / enum OpKind {
[INFO] [stdout] 18  | |     Add(i32),
[INFO] [stdout] 19  | |     Mul(i32),
[INFO] [stdout] 20  | |     Div(i32),
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stdout] 28  | | }
[INFO] [stdout]     | |_- the item `OpKind` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 247 |           use self::OpKind;
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]    --> src/op.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 | /         lazy_static! {
[INFO] [stdout] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stdout] 199 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "2e6b154d57bf3a012e0a0fb05e9e612d6244883f7f26a36d4df3d0f7864cfc5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e6b154d57bf3a012e0a0fb05e9e612d6244883f7f26a36d4df3d0f7864cfc5f", kill_on_drop: false }`
[INFO] [stdout] 2e6b154d57bf3a012e0a0fb05e9e612d6244883f7f26a36d4df3d0f7864cfc5f
[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" "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4623b2bbecbc63e9a77fd650f112f860950694cc9dab3acdc79f456852629d13
[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" "4623b2bbecbc63e9a77fd650f112f860950694cc9dab3acdc79f456852629d13", kill_on_drop: false }`
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 102 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Op` is imported redundantly
[INFO] [stderr]    --> src/op.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / pub struct Op {
[INFO] [stderr] 13  | |     inner: OpKind,
[INFO] [stderr] 14  | | }
[INFO] [stderr]     | |_- the item `Op` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 195 |           use self::Op;
[INFO] [stderr]     |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 247 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/op.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 | /         lazy_static! {
[INFO] [stderr] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stderr] 199 | |         }
[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: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(option_filter)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 102 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Op` is imported redundantly
[INFO] [stderr]    --> src/op.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 12  | / pub struct Op {
[INFO] [stderr] 13  | |     inner: OpKind,
[INFO] [stderr] 14  | | }
[INFO] [stderr]     | |_- the item `Op` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 195 |           use self::Op;
[INFO] [stderr]     |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `OpKind` is imported redundantly
[INFO] [stderr]    --> src/op.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 17  | / enum OpKind {
[INFO] [stderr] 18  | |     Add(i32),
[INFO] [stderr] 19  | |     Mul(i32),
[INFO] [stderr] 20  | |     Div(i32),
[INFO] [stderr] ...   |
[INFO] [stderr] 27  | |     Rpc { from_digits: u8, from_n: u32, to_digits: u8, to_n: u32 },
[INFO] [stderr] 28  | | }
[INFO] [stderr]     | |_- the item `OpKind` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 247 |           use self::OpKind;
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/op.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 | /         lazy_static! {
[INFO] [stderr] 198 | |             static ref RPC_PATTERN: Regex = Regex::new(r"(\d+)=>(\d+)").unwrap();
[INFO] [stderr] 199 | |         }
[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: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(option_filter)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib-b096903d0041f740
[INFO] [stdout] 
[INFO] [stdout] running 32 tests
[INFO] [stdout] test op::tests::apply_add_sub ... ok
[INFO] [stdout] test op::tests::apply_pow ... ok
[INFO] [stdout] test op::tests::apply_rev ... ok
[INFO] [stdout] test op::tests::apply_sum ... ok
[INFO] [stdout] test op::tests::display_add_sub ... ok
[INFO] [stdout] test op::tests::display_del ... ok
[INFO] [stdout] test op::tests::display_div ... ok
[INFO] [stdout] test op::tests::display_ins ... ok
[INFO] [stdout] test op::tests::display_neg ... ok
[INFO] [stdout] test op::tests::display_mul ... ok
[INFO] [stdout] test op::tests::display_pow ... ok
[INFO] [stdout] test op::tests::display_rev ... ok
[INFO] [stdout] test op::tests::apply_del ... ok
[INFO] [stdout] test op::tests::display_rpc ... ok
[INFO] [stdout] test op::tests::display_sum ... ok
[INFO] [stdout] test op::tests::parse_add ... ok
[INFO] [stdout] test op::tests::parse_div ... ok
[INFO] [stdout] test op::tests::parse_del ... ok
[INFO] [stdout] test op::tests::parse_ins ... ok
[INFO] [stdout] test op::tests::parse_mul ... ok
[INFO] [stdout] test op::tests::parse_neg ... ok
[INFO] [stdout] test op::tests::parse_pow ... ok
[INFO] [stdout] test op::tests::apply_ins ... ok
[INFO] [stdout] test op::tests::parse_rev ... ok
[INFO] [stdout] test op::tests::apply_neg ... ok
[INFO] [stdout] test op::tests::parse_sum ... ok
[INFO] [stdout] test op::tests::apply_rpc ... ok
[INFO] [stdout] test op::tests::apply_mul ... ok
[INFO] [stdout] test op::tests::apply_div ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bin-745bc64a183c5a72
[INFO] [stdout] test op::tests::parse_rpc ... ok
[INFO] [stdout] test op::tests::parse_sub ... ok
[INFO] [stdout] test op::tests::parse_err ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lib
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4623b2bbecbc63e9a77fd650f112f860950694cc9dab3acdc79f456852629d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4623b2bbecbc63e9a77fd650f112f860950694cc9dab3acdc79f456852629d13", kill_on_drop: false }`
[INFO] [stdout] 4623b2bbecbc63e9a77fd650f112f860950694cc9dab3acdc79f456852629d13