[INFO] cloning repository https://github.com/binshengliu/rforests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/binshengliu/rforests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinshengliu%2Frforests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinshengliu%2Frforests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40a73e30640d99db67db94435f2361758a7ea949
[INFO] testing binshengliu/rforests against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinshengliu%2Frforests" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/binshengliu/rforests on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/binshengliu/rforests
[INFO] finished tweaking git repo https://github.com/binshengliu/rforests
[INFO] tweaked toml for git repo https://github.com/binshengliu/rforests written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/binshengliu/rforests already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atty v0.2.3
[INFO] [stderr]   Downloaded lazy_static v0.2.9
[INFO] [stderr]   Downloaded clap v2.27.0
[INFO] [stderr]   Downloaded libc v0.2.32
[INFO] [stderr]   Downloaded scoped_threadpool v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcd93270e7cc5fd49bf6e02879c6fad18e8cf7825e0f33799f393e25e8f22113
[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" "dcd93270e7cc5fd49bf6e02879c6fad18e8cf7825e0f33799f393e25e8f22113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcd93270e7cc5fd49bf6e02879c6fad18e8cf7825e0f33799f393e25e8f22113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcd93270e7cc5fd49bf6e02879c6fad18e8cf7825e0f33799f393e25e8f22113", kill_on_drop: false }`
[INFO] [stdout] dcd93270e7cc5fd49bf6e02879c6fad18e8cf7825e0f33799f393e25e8f22113
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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] a330fd9a15780369808f6ce20d0cc09b8800e551fccff84262eeb3fedc8d1abd
[INFO] running `Command { std: "docker" "start" "-a" "a330fd9a15780369808f6ce20d0cc09b8800e551fccff84262eeb3fedc8d1abd", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling clap v2.27.0
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling rforests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub type Result<T> = ::std::result::Result<T, Box<::std::error::Error>>;
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[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/metric/mod.rs:18:48
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn new(name: &str, k: usize) -> Option<Box<Measure>> {
[INFO] [stdout]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/dataset.rs:326:22
[INFO] [stdout]     |
[INFO] [stdout] 326 |         metric: &Box<Measure>,
[INFO] [stdout]     |                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/validate_set.rs:24:40
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout]    |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:174:18
[INFO] [stdout]     |
[INFO] [stdout] 174 |     metric: &Box<Measure>,
[INFO] [stdout]     |                  ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:351:70
[INFO] [stdout]     |
[INFO] [stdout] 351 |     pub fn update_lambdas_weights<'a, 'b>(&'a mut self, metric: &Box<Measure>) {
[INFO] [stdout]     |                                                                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:392:40
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout]     |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/lambdamart.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub metric: Box<Measure>,
[INFO] [stdout]    |                     ^^^^^^^ help: use `dyn`: `dyn Measure`
[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: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/util.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (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/util.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (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/metric/ndcg.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (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/metric/ndcg.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/format/svmlight.rs:217:32
[INFO] [stdout]     |
[INFO] [stdout] 217 |                 .map_err(|e| e.description().into())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/train/lambdamart/regression_tree.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     parent: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ord_max_min)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.08s
[INFO] running `Command { std: "docker" "inspect" "a330fd9a15780369808f6ce20d0cc09b8800e551fccff84262eeb3fedc8d1abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a330fd9a15780369808f6ce20d0cc09b8800e551fccff84262eeb3fedc8d1abd", kill_on_drop: false }`
[INFO] [stdout] a330fd9a15780369808f6ce20d0cc09b8800e551fccff84262eeb3fedc8d1abd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b158ddec97c5f33e85759d1895652aa8b6594456cfd90d21c5340c968e98bdb
[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" "0b158ddec97c5f33e85759d1895652aa8b6594456cfd90d21c5340c968e98bdb", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub type Result<T> = ::std::result::Result<T, Box<::std::error::Error>>;
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[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/metric/mod.rs:18:48
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn new(name: &str, k: usize) -> Option<Box<Measure>> {
[INFO] [stdout]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/dataset.rs:326:22
[INFO] [stdout]     |
[INFO] [stdout] 326 |         metric: &Box<Measure>,
[INFO] [stdout]     |                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/validate_set.rs:24:40
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout]    |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:174:18
[INFO] [stdout]     |
[INFO] [stdout] 174 |     metric: &Box<Measure>,
[INFO] [stdout]     |                  ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:351:70
[INFO] [stdout]     |
[INFO] [stdout] 351 |     pub fn update_lambdas_weights<'a, 'b>(&'a mut self, metric: &Box<Measure>) {
[INFO] [stdout]     |                                                                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:392:40
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout]     |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/lambdamart.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub metric: Box<Measure>,
[INFO] [stdout]    |                     ^^^^^^^ help: use `dyn`: `dyn Measure`
[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: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/util.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (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/util.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (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/metric/ndcg.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (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/metric/ndcg.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/format/svmlight.rs:217:32
[INFO] [stdout]     |
[INFO] [stdout] 217 |                 .map_err(|e| e.description().into())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/train/lambdamart/regression_tree.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     parent: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ord_max_min)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rforests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub type Result<T> = ::std::result::Result<T, Box<::std::error::Error>>;
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[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/metric/mod.rs:18:48
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn new(name: &str, k: usize) -> Option<Box<Measure>> {
[INFO] [stdout]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/dataset.rs:326:22
[INFO] [stdout]     |
[INFO] [stdout] 326 |         metric: &Box<Measure>,
[INFO] [stdout]     |                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/validate_set.rs:24:40
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout]    |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:174:18
[INFO] [stdout]     |
[INFO] [stdout] 174 |     metric: &Box<Measure>,
[INFO] [stdout]     |                  ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:351:70
[INFO] [stdout]     |
[INFO] [stdout] 351 |     pub fn update_lambdas_weights<'a, 'b>(&'a mut self, metric: &Box<Measure>) {
[INFO] [stdout]     |                                                                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/training_set.rs:392:40
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout]     |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[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/train/lambdamart/lambdamart.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub metric: Box<Measure>,
[INFO] [stdout]    |                     ^^^^^^^ help: use `dyn`: `dyn Measure`
[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: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/util.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (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/util.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / lazy_static! {
[INFO] [stdout] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (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/metric/ndcg.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (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/metric/ndcg.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / lazy_static! {
[INFO] [stdout] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/format/svmlight.rs:217:32
[INFO] [stdout]     |
[INFO] [stdout] 217 |                 .map_err(|e| e.description().into())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/train/lambdamart/regression_tree.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     parent: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ord_max_min)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "0b158ddec97c5f33e85759d1895652aa8b6594456cfd90d21c5340c968e98bdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b158ddec97c5f33e85759d1895652aa8b6594456cfd90d21c5340c968e98bdb", kill_on_drop: false }`
[INFO] [stdout] 0b158ddec97c5f33e85759d1895652aa8b6594456cfd90d21c5340c968e98bdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d4295d758d7d2ed39e61502bfb8092eaa9a0ba31cc8b3beb2490eb399485bb49
[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" "d4295d758d7d2ed39e61502bfb8092eaa9a0ba31cc8b3beb2490eb399485bb49", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 17 tests
[INFO] [stderr]  --> src/util.rs:1:51
[INFO] [stdout] test metric::dcg::test::test_dcg_score ... ok
[INFO] [stderr]   |
[INFO] [stdout] test format::svmlight::tests::test_line_parse ... ok
[INFO] [stderr] 1 | pub type Result<T> = ::std::result::Result<T, Box<::std::error::Error>>;
[INFO] [stdout] test metric::dcg::test::test_dcg_swap_changes ... ok
[INFO] [stderr]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stdout] test metric::ndcg::test::test_ndcg_score_k_is_2 ... ok
[INFO] [stderr]   |
[INFO] [stdout] test metric::ndcg::test::test_ndcg_score_zeros ... ok
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] test metric::ndcg::test::test_ndcg_swap_changes ... ok
[INFO] [stderr]   = 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] test train::dataset::test::test_generate_queries ... ok
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/metric/mod.rs:18:48
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn new(name: &str, k: usize) -> Option<Box<Measure>> {
[INFO] [stderr]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/dataset.rs:326:22
[INFO] [stderr]     |
[INFO] [stderr] 326 |         metric: &Box<Measure>,
[INFO] [stderr]     |                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/train/validate_set.rs:24:40
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stdout] test train::lambdamart::training_set::tests::test_instance_interface ... ok
[INFO] [stderr]    |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stdout] test metric::dcg::test::test_dcg_score_k_is_2 ... ok
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/lambdamart/training_set.rs:174:18
[INFO] [stderr]     |
[INFO] [stderr] 174 |     metric: &Box<Measure>,
[INFO] [stderr]     |                  ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/lambdamart/training_set.rs:351:70
[INFO] [stderr]     |
[INFO] [stderr] 351 |     pub fn update_lambdas_weights<'a, 'b>(&'a mut self, metric: &Box<Measure>) {
[INFO] [stderr]     |                                                                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/lambdamart/training_set.rs:392:40
[INFO] [stderr]     |
[INFO] [stderr] 392 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stderr]     |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/train/lambdamart/lambdamart.rs:20:21
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub metric: Box<Measure>,
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> src/util.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> src/util.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]  --> src/metric/ndcg.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stderr] 6 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]  --> src/metric/ndcg.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stderr] 6 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/format/svmlight.rs:217:32
[INFO] [stderr]     |
[INFO] [stderr] 217 |                 .map_err(|e| e.description().into())
[INFO] [stderr]     |                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parent`
[INFO] [stderr]   --> src/train/lambdamart/regression_tree.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     parent: Option<usize>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(ord_max_min)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/util.rs:1:51
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub type Result<T> = ::std::result::Result<T, Box<::std::error::Error>>;
[INFO] [stderr]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/metric/mod.rs:18:48
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn new(name: &str, k: usize) -> Option<Box<Measure>> {
[INFO] [stderr]    |                                                ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/dataset.rs:326:22
[INFO] [stderr]     |
[INFO] [stderr] 326 |         metric: &Box<Measure>,
[INFO] [stderr]     |                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/train/validate_set.rs:24:40
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stderr]    |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/lambdamart/training_set.rs:174:18
[INFO] [stderr]     |
[INFO] [stderr] 174 |     metric: &Box<Measure>,
[INFO] [stderr]     |                  ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/lambdamart/training_set.rs:351:70
[INFO] [stderr]     |
[INFO] [stderr] 351 |     pub fn update_lambdas_weights<'a, 'b>(&'a mut self, metric: &Box<Measure>) {
[INFO] [stderr]     |                                                                      ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/train/lambdamart/training_set.rs:392:40
[INFO] [stderr]     |
[INFO] [stderr] 392 |     pub fn measure(&self, metric: &Box<Measure>) -> f64 {
[INFO] [stderr]     |                                        ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/train/lambdamart/lambdamart.rs:20:21
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub metric: Box<Measure>,
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn Measure`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> src/util.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> src/util.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / lazy_static! {
[INFO] [stderr] 13 | |     pub static ref POOL: Mutex<Pool> = Mutex::new(Pool::new(num_cpus::get() as u32));
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]  --> src/metric/ndcg.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stderr] 6 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]  --> src/metric/ndcg.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | / lazy_static! {
[INFO] [stderr] 5 | |     static ref DISCOUNT: Vec<f64> = (0..128).map(|i| 1.0 / (i as f64 + 2.0).log2()).collect();
[INFO] [stderr] 6 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/format/svmlight.rs:217:32
[INFO] [stderr]     |
[INFO] [stderr] 217 |                 .map_err(|e| e.description().into())
[INFO] [stderr]     |                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parent`
[INFO] [stderr]   --> src/train/lambdamart/regression_tree.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     parent: Option<usize>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `ord_max_min` has been stable since 1.21.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(ord_max_min)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rforests-f123847bd873cdad)
[INFO] [stdout] test metric::ndcg::test::test_ndcg_score ... ok
[INFO] [stdout] test train::lambdamart::training_set::tests::test_threshold_map ... ok
[INFO] [stdout] test train::lambdamart::training_set::tests::test_data_set_lambda_weight ... ok
[INFO] [stdout] test train::lambdamart::training_set::tests::test_data_set_sample_split ... ok
[INFO] [stdout] test train::lambdamart::training_set::tests::test_data_set_sample_non_split ... ok
[INFO] [stdout] test train::lambdamart::regression_tree::test::test_tree_fitting ... ok
[INFO] [stdout] test train::lambdamart::training_set::tests::bench_split ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rforests-2734977a6471a3dd)
[INFO] [stdout] test train::lambdamart::lambdamart::test::test_lambda_mart ... ok
[INFO] [stderr]    Doc-tests rforests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.90s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/train/lambdamart/training_set.rs - train::lambdamart::training_set::ThresholdMap::map (line 25) ... FAILED
[INFO] [stdout] test src/train/lambdamart/lambdamart.rs - train::lambdamart::lambdamart::LambdaMART::new (line 94) ... ok
[INFO] [stdout] test src/train/dataset.rs - train::dataset::DataSet::label_iter (line 261) ... ok
[INFO] [stdout] test src/train/dataset.rs - train::dataset::DataSet::query_iter (line 294) ... ok
[INFO] [stdout] test src/train/dataset.rs - train::dataset::DataSet::from_iter (line 124) ... ok
[INFO] [stdout] test src/train/dataset.rs - train::dataset::DataSet::load (line 180) ... ok
[INFO] [stdout] test src/train/dataset.rs - train::dataset::DataSet::fid_iter (line 238) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/train/lambdamart/training_set.rs - train::lambdamart::training_set::ThresholdMap::map (line 25) stdout ----
[INFO] [stdout] error: format argument must be a string literal
[INFO] [stdout]  --> src/train/lambdamart/training_set.rs:26:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | assert_eq!(map.len(), 100,000);
[INFO] [stdout]   |                           ^^^
[INFO] [stdout]   |
[INFO] [stdout] help: you might be missing a string literal to format with
[INFO] [stdout]   |
[INFO] [stdout] 3 | assert_eq!(map.len(), 100,"{}", 000);
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `map` in this scope
[INFO] [stdout]  --> src/train/lambdamart/training_set.rs:26:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | assert_eq!(map.len(), 100,000);
[INFO] [stdout]   |            ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `map` in this scope
[INFO] [stdout]  --> src/train/lambdamart/training_set.rs:27:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | assert!(map.iter().all(|&i| i <= 256));
[INFO] [stdout]   |         ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/train/lambdamart/training_set.rs - train::lambdamart::training_set::ThresholdMap::map (line 25)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 6 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.57s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "d4295d758d7d2ed39e61502bfb8092eaa9a0ba31cc8b3beb2490eb399485bb49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4295d758d7d2ed39e61502bfb8092eaa9a0ba31cc8b3beb2490eb399485bb49", kill_on_drop: false }`
[INFO] [stdout] d4295d758d7d2ed39e61502bfb8092eaa9a0ba31cc8b3beb2490eb399485bb49