[INFO] cloning repository https://github.com/goby/rust-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/goby/rust-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoby%2Frust-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoby%2Frust-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed7f2d3593e24c9ea60624d3505ec7f85d7b05b2
[INFO] building goby/rust-study against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoby%2Frust-study" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/goby/rust-study on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/goby/rust-study
[INFO] finished tweaking git repo https://github.com/goby/rust-study
[INFO] tweaked toml for git repo https://github.com/goby/rust-study written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/goby/rust-study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded mio v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7415c4ba7740bdab60514e75e196befb4fc494aa2286d788a81f8437a3831577
[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" "7415c4ba7740bdab60514e75e196befb4fc494aa2286d788a81f8437a3831577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7415c4ba7740bdab60514e75e196befb4fc494aa2286d788a81f8437a3831577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7415c4ba7740bdab60514e75e196befb4fc494aa2286d788a81f8437a3831577", kill_on_drop: false }`
[INFO] [stdout] 7415c4ba7740bdab60514e75e196befb4fc494aa2286d788a81f8437a3831577
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7305e8ee074c552068c79c2e1a6a9cde83f27b12ffe34fa25cf5441bbfdb5292
[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" "7305e8ee074c552068c79c2e1a6a9cde83f27b12ffe34fa25cf5441bbfdb5292", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.16
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling mio v0.6.0
[INFO] [stderr]    Compiling guessing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:72:24
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn has_edge(&self, &Self::Node, &Self::Node) -> bool;
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn has_edge(&self, &Self::Node, &Self::Node) -> bool;
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn edges(&self, &Self::Node) -> Vec<Self::Edge>;
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn dynamic_dispatch(t: &FormatString) {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn FormatString`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/macros.rs:62:43
[INFO] [stdout]    |
[INFO] [stdout] 62 |         fn x() { println!("x() outbound")};
[INFO] [stdout]    |                                           ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |             $($x);*;
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |             $($x);*;
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout] ...
[INFO] [stdout] 122 |     m_stmt!(let haha = 3, let _ = 33);
[INFO] [stdout]     |     ---------------------------------- in this macro invocation
[INFO] [stdout]     |
[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: unused macro definition
[INFO] [stdout]   --> src/concurrency.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / macro_rules! concurrency {
[INFO] [stdout] 3  | |     ($start: expr, $end: expr, |$x: ident| -> $dd: block) => {
[INFO] [stdout] 4  | |         let handlers: Vec<_> = ($start..$end).map(|$x| {
[INFO] [stdout] 5  | |             thread::spawn(move || {
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n1`
[INFO] [stdout]   --> src/structs.rs:86:24
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn has_edge(&self, n1: &Node, n2: &Node) -> bool {
[INFO] [stdout]    |                        ^^ help: if this is intentional, prefix it with an underscore: `_n1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n2`
[INFO] [stdout]   --> src/structs.rs:86:35
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn has_edge(&self, n1: &Node, n2: &Node) -> bool {
[INFO] [stdout]    |                                   ^^ help: if this is intentional, prefix it with an underscore: `_n2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/structs.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn edges(&self, node: &Node) -> Vec<Edge> {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/structs.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     x: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/structs.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     y: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]   --> src/structs.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     start: Point<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]   --> src/structs.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     end: Point<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/structs.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     x: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/structs.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     y: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z`
[INFO] [stdout]   --> src/structs.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     z: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]   --> src/structs.rs:52:6
[INFO] [stdout]    |
[INFO] [stdout] 52 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `centor`
[INFO] [stdout]    --> src/structs.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     centor: Point<T>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]    --> src/structs.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn area(&self) -> f64 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grow`
[INFO] [stdout]    --> src/structs.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn grow(&self, increment: f64) -> Circle {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normal`
[INFO] [stdout]   --> src/traits.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn normal<T: ConvertTo<i64>>(x: &T) -> i64 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inverse`
[INFO] [stdout]   --> src/traits.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn inverse<T>() -> T
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `static_dispatch`
[INFO] [stdout]   --> src/traits.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn static_dispatch<T: FormatString>(t: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dynamic_dispatch`
[INFO] [stdout]   --> src/traits.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn dynamic_dispatch(t: &FormatString) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `object_safe`
[INFO] [stdout]   --> src/traits.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn object_safe() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trait_with_same_function`
[INFO] [stdout]   --> src/traits.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn trait_with_same_function() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trait_with_as_form`
[INFO] [stdout]    --> src/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn trait_with_as_form() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_move`
[INFO] [stdout]  --> src/lifetimes.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn test_move() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ownership`
[INFO] [stdout]   --> src/lifetimes.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn test_ownership() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_lifetime`
[INFO] [stdout]   --> src/lifetimes.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn test_lifetime() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_elided_lifetime`
[INFO] [stdout]   --> src/lifetimes.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test_elided_lifetime() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.97s
[INFO] running `Command { std: "docker" "inspect" "7305e8ee074c552068c79c2e1a6a9cde83f27b12ffe34fa25cf5441bbfdb5292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7305e8ee074c552068c79c2e1a6a9cde83f27b12ffe34fa25cf5441bbfdb5292", kill_on_drop: false }`
[INFO] [stdout] 7305e8ee074c552068c79c2e1a6a9cde83f27b12ffe34fa25cf5441bbfdb5292
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6718a0eea5129d10ee60afc7a59cb3f972871543e33e1909f530d835c3862ec6
[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" "6718a0eea5129d10ee60afc7a59cb3f972871543e33e1909f530d835c3862ec6", kill_on_drop: false }`
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:72:24
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn has_edge(&self, &Self::Node, &Self::Node) -> bool;
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn has_edge(&self, &Self::Node, &Self::Node) -> bool;
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn edges(&self, &Self::Node) -> Vec<Self::Edge>;
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn dynamic_dispatch(t: &FormatString) {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn FormatString`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/macros.rs:62:43
[INFO] [stdout]    |
[INFO] [stdout] 62 |         fn x() { println!("x() outbound")};
[INFO] [stdout]    |                                           ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |             $($x);*;
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |             $($x);*;
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout] ...
[INFO] [stdout] 122 |     m_stmt!(let haha = 3, let _ = 33);
[INFO] [stdout]     |     ---------------------------------- in this macro invocation
[INFO] [stdout]     |
[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: unused macro definition
[INFO] [stdout]   --> src/concurrency.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / macro_rules! concurrency {
[INFO] [stdout] 3  | |     ($start: expr, $end: expr, |$x: ident| -> $dd: block) => {
[INFO] [stdout] 4  | |         let handlers: Vec<_> = ($start..$end).map(|$x| {
[INFO] [stdout] 5  | |             thread::spawn(move || {
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n1`
[INFO] [stdout]   --> src/structs.rs:86:24
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn has_edge(&self, n1: &Node, n2: &Node) -> bool {
[INFO] [stdout]    |                        ^^ help: if this is intentional, prefix it with an underscore: `_n1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n2`
[INFO] [stdout]   --> src/structs.rs:86:35
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn has_edge(&self, n1: &Node, n2: &Node) -> bool {
[INFO] [stdout]    |                                   ^^ help: if this is intentional, prefix it with an underscore: `_n2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling guessing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/structs.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn edges(&self, node: &Node) -> Vec<Edge> {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/structs.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     x: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/structs.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     y: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]   --> src/structs.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     start: Point<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]   --> src/structs.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     end: Point<T>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/structs.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     x: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/structs.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     y: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z`
[INFO] [stdout]   --> src/structs.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     z: &'a mut i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]   --> src/structs.rs:52:6
[INFO] [stdout]    |
[INFO] [stdout] 52 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `centor`
[INFO] [stdout]    --> src/structs.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     centor: Point<T>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]    --> src/structs.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn area(&self) -> f64 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grow`
[INFO] [stdout]    --> src/structs.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn grow(&self, increment: f64) -> Circle {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normal`
[INFO] [stdout]   --> src/traits.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn normal<T: ConvertTo<i64>>(x: &T) -> i64 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inverse`
[INFO] [stdout]   --> src/traits.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn inverse<T>() -> T
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `static_dispatch`
[INFO] [stdout]   --> src/traits.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn static_dispatch<T: FormatString>(t: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dynamic_dispatch`
[INFO] [stdout]   --> src/traits.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn dynamic_dispatch(t: &FormatString) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `object_safe`
[INFO] [stdout]   --> src/traits.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn object_safe() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trait_with_same_function`
[INFO] [stdout]   --> src/traits.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn trait_with_same_function() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trait_with_as_form`
[INFO] [stdout]    --> src/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn trait_with_as_form() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_move`
[INFO] [stdout]  --> src/lifetimes.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn test_move() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ownership`
[INFO] [stdout]   --> src/lifetimes.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn test_ownership() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_lifetime`
[INFO] [stdout]   --> src/lifetimes.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn test_lifetime() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_elided_lifetime`
[INFO] [stdout]   --> src/lifetimes.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test_elided_lifetime() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]   --> src/closures.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |             extern "rust-call" fn call(&self, args: Args) -> Self::Output;
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]   --> src/closures.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |             extern "rust-call" fn call(&mut self, args: Args) -> Self::Output;
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]   --> src/closures.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 |             extern "rust-call" fn call(self, args: Args) -> Self::Output;
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:72:24
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn has_edge(&self, &Self::Node, &Self::Node) -> bool;
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn has_edge(&self, &Self::Node, &Self::Node) -> bool;
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/structs.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn edges(&self, &Self::Node) -> Vec<Self::Edge>;
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/structs.rs:136:38
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let obj = Box::new(g) as Box<Graph<Node=Node, Edge = Edge>>;
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Graph<Node=Node, Edge = Edge>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn dynamic_dispatch(t: &FormatString) {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn FormatString`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/traits.rs:150:29
[INFO] [stdout]     |
[INFO] [stdout] 150 |     dynamic_dispatch(&x as &FormatString);
[INFO] [stdout]     |                             ^^^^^^^^^^^^ help: use `dyn`: `dyn FormatString`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/traits.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 |     dynamic_dispatch(&y as &FormatString);
[INFO] [stdout]     |                             ^^^^^^^^^^^^ help: use `dyn`: `dyn FormatString`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/closures.rs:10:49
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn test_return_closure(num: i32) -> Box<Fn(i32) -> i32> {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/closures.rs:49:36
[INFO] [stdout]    |
[INFO] [stdout] 49 |         fn call_with_two(closure: &Fn(i32) -> i32) -> i32 {
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/macros.rs:62:43
[INFO] [stdout]    |
[INFO] [stdout] 62 |         fn x() { println!("x() outbound")};
[INFO] [stdout]    |                                           ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |             $($x);*;
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/macros.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |             $($x);*;
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout] ...
[INFO] [stdout] 122 |     m_stmt!(let haha = 3, let _ = 33);
[INFO] [stdout]     |     ---------------------------------- in this macro invocation
[INFO] [stdout]     |
[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] error: aborting due to 3 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `guessing`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6718a0eea5129d10ee60afc7a59cb3f972871543e33e1909f530d835c3862ec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6718a0eea5129d10ee60afc7a59cb3f972871543e33e1909f530d835c3862ec6", kill_on_drop: false }`
[INFO] [stdout] 6718a0eea5129d10ee60afc7a59cb3f972871543e33e1909f530d835c3862ec6
