[INFO] updating cached repository https://github.com/tynr426/future_pro
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a60f107071499d786781396011a0e3ff5f51f65b
[INFO] checking tynr426/future_pro against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftynr426%2Ffuture_pro" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tynr426/future_pro on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tynr426/future_pro
[INFO] finished tweaking git repo https://github.com/tynr426/future_pro
[INFO] tweaked toml for git repo https://github.com/tynr426/future_pro written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/tynr426/future_pro already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e838120cd182303ad24557a6d93bd26bf841063f87a51e025510cebdcf3af151
[INFO] running `"docker" "start" "-a" "e838120cd182303ad24557a6d93bd26bf841063f87a51e025510cebdcf3af151"`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking tokio-sync v0.1.7
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking future_pro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error_defined.rs:14:32
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn cause(&self) -> Option<&error::Error>{
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error_defined.rs:29:30
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn cause(&self)->Option<&error::Error>{
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:36:49
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn my_fut()->impl Future<Item = u32, Error =Box<Error+'static>> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:39:62
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn my_fut_squared(i:u32)->impl Future<Item = u32, Error =Box<Error+'static>> {
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:42:43
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn my_fut_squared2(i:u32)->Result<u32,Box<Error+'static>> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:45:75
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn fut_generic_own<A> (a1: A, a2: A) -> impl Future<Item = A, Error = Box<Error+'static>> 
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error_defined.rs:14:32
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn cause(&self) -> Option<&error::Error>{
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error_defined.rs:29:30
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn cause(&self)->Option<&error::Error>{
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:36:49
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn my_fut()->impl Future<Item = u32, Error =Box<Error+'static>> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:39:62
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn my_fut_squared(i:u32)->impl Future<Item = u32, Error =Box<Error+'static>> {
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:42:43
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn my_fut_squared2(i:u32)->Result<u32,Box<Error+'static>> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:45:75
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn fut_generic_own<A> (a1: A, a2: A) -> impl Future<Item = A, Error = Box<Error+'static>> 
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^ help: use `dyn`: `dyn Error+'static`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:30:41
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let future2= fut_error_a().map_err(|e|{
[INFO] [stderr]    |                                         ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:30:41
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let future2= fut_error_a().map_err(|e|{
[INFO] [stderr]    |                                         ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.08s
[INFO] running `"docker" "inspect" "e838120cd182303ad24557a6d93bd26bf841063f87a51e025510cebdcf3af151"`
[INFO] running `"docker" "rm" "-f" "e838120cd182303ad24557a6d93bd26bf841063f87a51e025510cebdcf3af151"`
[INFO] [stdout] e838120cd182303ad24557a6d93bd26bf841063f87a51e025510cebdcf3af151