[INFO] crate rusty-variation 0.1.0 is already in cache
[INFO] checking rusty-variation-0.1.0 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate rusty-variation 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rusty-variation 0.1.0 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rusty-variation 0.1.0
[INFO] finished tweaking crates.io crate rusty-variation 0.1.0
[INFO] tweaked toml for crates.io crate rusty-variation 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] a2c0fc2c2527736ebd7f926b9df5db2f813ae223f6a4ef2d26cd82c324a928b7
[INFO] running `"docker" "start" "-a" "a2c0fc2c2527736ebd7f926b9df5db2f813ae223f6a4ef2d26cd82c324a928b7"`
[INFO] [stderr]     Checking rusty-variation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:65:73
[INFO] [stderr]    |
[INFO] [stderr] 65 | ...                   -> Result<S, Box<Error + 'a>> {
[INFO] [stderr]    |                                        ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[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/lib.rs:72:71
[INFO] [stderr]    |
[INFO] [stderr] 72 | ...                   -> Result<(T, S), Box<Error + 'a>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:77:40
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn close(s: End) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:82:42
[INFO] [stderr]    |
[INFO] [stderr] 82 | pub fn cancel<T>(x: T) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:36
[INFO] [stderr]     |
[INFO] [stderr] 140 |     F: FnOnce(S1) -> Result<R, Box<Error + 'a>>,
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:141:36
[INFO] [stderr]     |
[INFO] [stderr] 141 |     G: FnOnce(S2) -> Result<R, Box<Error + 'a>>,
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:138:77
[INFO] [stderr]     |
[INFO] [stderr] 138 | ...                   -> Result<R, Box<Error + 'a>>
[INFO] [stderr]     |                                        ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:148:78
[INFO] [stderr]     |
[INFO] [stderr] 148 | ...                   -> Result<S1, Box<Error + 'a>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:155:79
[INFO] [stderr]     |
[INFO] [stderr] 155 | ...                   -> Result<S2, Box<Error + 'a>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:65:73
[INFO] [stderr]    |
[INFO] [stderr] 65 | ...                   -> Result<S, Box<Error + 'a>> {
[INFO] [stderr]    |                                        ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[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/lib.rs:72:71
[INFO] [stderr]    |
[INFO] [stderr] 72 | ...                   -> Result<(T, S), Box<Error + 'a>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:77:40
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn close(s: End) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:82:42
[INFO] [stderr]    |
[INFO] [stderr] 82 | pub fn cancel<T>(x: T) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:36
[INFO] [stderr]     |
[INFO] [stderr] 140 |     F: FnOnce(S1) -> Result<R, Box<Error + 'a>>,
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:141:36
[INFO] [stderr]     |
[INFO] [stderr] 141 |     G: FnOnce(S2) -> Result<R, Box<Error + 'a>>,
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:138:77
[INFO] [stderr]     |
[INFO] [stderr] 138 | ...                   -> Result<R, Box<Error + 'a>>
[INFO] [stderr]     |                                        ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:148:78
[INFO] [stderr]     |
[INFO] [stderr] 148 | ...                   -> Result<S1, Box<Error + 'a>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:155:79
[INFO] [stderr]     |
[INFO] [stderr] 155 | ...                   -> Result<S2, Box<Error + 'a>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Error + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:198:38
[INFO] [stderr]     |
[INFO] [stderr] 198 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:107:47
[INFO] [stderr]     |
[INFO] [stderr] 107 |               let r = (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 200 |               let s = fork!(move |s: Send<(), End>| {
[INFO] [stderr]     |  _____________________-
[INFO] [stderr] 201 | |                 let s = send((), s)?;
[INFO] [stderr] 202 | |                 close(s)
[INFO] [stderr] 203 | |             });
[INFO] [stderr]     | |______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:221:71
[INFO] [stderr]     |
[INFO] [stderr] 221 |     fn simple_calc_server(s: SimpleCalcServer<i32>) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:238:38
[INFO] [stderr]     |
[INFO] [stderr] 238 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:278:67
[INFO] [stderr]     |
[INFO] [stderr] 278 |     fn nice_calc_server(s: NiceCalcServer<i32>) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:296:38
[INFO] [stderr]     |
[INFO] [stderr] 296 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:35
[INFO] [stderr]     |
[INFO] [stderr] 178 |         (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 305 |                 let s = select!(CalcOp::Neg, s)?;
[INFO] [stderr]     |                         ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:35
[INFO] [stderr]     |
[INFO] [stderr] 178 |         (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 317 |                 let s = select!(CalcOp::Add, s)?;
[INFO] [stderr]     |                         ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:335:38
[INFO] [stderr]     |
[INFO] [stderr] 335 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:107:47
[INFO] [stderr]     |
[INFO] [stderr] 107 |               let r = (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 353 |           let (other_thread, s) = fork_with_thread_id!(
[INFO] [stderr]     |  _________________________________-
[INFO] [stderr] 354 | |             move |s: NiceCalcServer<i32>| {cancel(s)});
[INFO] [stderr]     | |______________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:356:38
[INFO] [stderr]     |
[INFO] [stderr] 356 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:35
[INFO] [stderr]     |
[INFO] [stderr] 178 |         (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 358 |             let s = select!(CalcOp::Add, s)?;
[INFO] [stderr]     |                     ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:107:47
[INFO] [stderr]     |
[INFO] [stderr] 107 |               let r = (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 374 |           let (other_thread2, u) = fork_with_thread_id!(
[INFO] [stderr]     |  __________________________________-
[INFO] [stderr] 375 | |             move |u: Recv<NiceCalcClient<i32>, End>| {cancel(u)});
[INFO] [stderr]     | |_________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:377:38
[INFO] [stderr]     |
[INFO] [stderr] 377 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:393:39
[INFO] [stderr]     |
[INFO] [stderr] 393 |         assert!(|| -> Result<i32, Box<Error>> {
[INFO] [stderr]     |                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:396:54
[INFO] [stderr]     |
[INFO] [stderr] 396 |             let f = move |x: i32| -> Result<i32, Box<Error>> {
[INFO] [stderr]     |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:35
[INFO] [stderr]     |
[INFO] [stderr] 178 |         (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 397 |                 let s = select!(CalcOp::Neg, s)?;
[INFO] [stderr]     |                         ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:420:65
[INFO] [stderr]     |
[INFO] [stderr] 420 |     fn nice_sum_server(s: NiceSumServer<i32>) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:424:79
[INFO] [stderr]     |
[INFO] [stderr] 424 |     fn nice_sum_server_accum(s: NiceSumServer<i32>, x: i32) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:438:49
[INFO] [stderr]     |
[INFO] [stderr] 438 | ...                   -> Result<i32, Box<Error>> {
[INFO] [stderr]     |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:35
[INFO] [stderr]     |
[INFO] [stderr] 178 |         (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 441 |                 let s = select!(SumOp::More, s)?;
[INFO] [stderr]     |                         ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:35
[INFO] [stderr]     |
[INFO] [stderr] 178 |         (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 446 |                 let s = select!(SumOp::Done, s)?;
[INFO] [stderr]     |                         ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:464:38
[INFO] [stderr]     |
[INFO] [stderr] 464 |         assert!(|| -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:107:47
[INFO] [stderr]     |
[INFO] [stderr] 107 |               let r = (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 478 |           let s = fork!(move |s: Send<(), End>| {
[INFO] [stderr]     |  _________________-
[INFO] [stderr] 479 | |             loop {
[INFO] [stderr] 480 | |                 // Let's trick the reachability checker
[INFO] [stderr] 481 | |                 if false { break; }
[INFO] [stderr] ...   |
[INFO] [stderr] 484 | |             Ok(())
[INFO] [stderr] 485 | |         });
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:487:30
[INFO] [stderr]     |
[INFO] [stderr] 487 |         || -> Result<(), Box<Error>> {
[INFO] [stderr]     |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:107:47
[INFO] [stderr]     |
[INFO] [stderr] 107 |               let r = (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 496 |           let s = fork!(move |s: Send<(), End>| {
[INFO] [stderr]     |  _________________-
[INFO] [stderr] 497 | |             mem::forget(s);
[INFO] [stderr] 498 | |             Ok(())
[INFO] [stderr] 499 | |         });
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:501:30
[INFO] [stderr]     |
[INFO] [stderr] 501 |         || -> Result<(), Box<Error>> {
[INFO] [stderr]     |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:107:47
[INFO] [stderr]     |
[INFO] [stderr] 107 |               let r = (move || -> Result<_, Box<Error>> {
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] ...
[INFO] [stderr] 511 |           let r2 = fork!(move |s2: Send<(), End>| {
[INFO] [stderr]     |  __________________-
[INFO] [stderr] 512 | |             let (x, End) = recv(r1)?;
[INFO] [stderr] 513 | |             let End = send(x, s2)?;
[INFO] [stderr] 514 | |             Ok(())
[INFO] [stderr] 515 | |         });
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:517:30
[INFO] [stderr]     |
[INFO] [stderr] 517 |         || -> Result<(), Box<Error>> {
[INFO] [stderr]     |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 244 |                 let s: SimpleCalcClient<i32> = fork!(simple_calc_server);
[INFO] [stderr]     |                                                ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 254 |                 let s: SimpleCalcClient<i32> = fork!(simple_calc_server);
[INFO] [stderr]     |                                                ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 303 |                 let s: NiceCalcClient<i32> = fork!(nice_calc_server);
[INFO] [stderr]     |                                              ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 314 |                 let s: NiceCalcClient<i32> = fork!(nice_calc_server);
[INFO] [stderr]     |                                              ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 333 |         let (other_thread, s) = fork_with_thread_id!(nice_calc_server);
[INFO] [stderr]     |                                 -------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 373 |         let (other_thread1, s) = fork_with_thread_id!(nice_calc_server);
[INFO] [stderr]     |                                  -------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |                   Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 374 |           let (other_thread2, u) = fork_with_thread_id!(
[INFO] [stderr]     |  __________________________________-
[INFO] [stderr] 375 | |             move |u: Recv<NiceCalcClient<i32>, End>| {cancel(u)});
[INFO] [stderr]     | |_________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 391 |         let (other_thread, s) = fork_with_thread_id!(nice_calc_server);
[INFO] [stderr]     |                                 -------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:97:42
[INFO] [stderr]     |
[INFO] [stderr] 97  |                 Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 462 |         let (other_thread, s) = fork_with_thread_id!(nice_sum_server);
[INFO] [stderr]     |                                 ------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |                   Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 200 |               let s = fork!(move |s: Send<(), End>| {
[INFO] [stderr]     |  _____________________-
[INFO] [stderr] 201 | |                 let s = send((), s)?;
[INFO] [stderr] 202 | |                 close(s)
[INFO] [stderr] 203 | |             });
[INFO] [stderr]     | |______________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |                   Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 353 |           let (other_thread, s) = fork_with_thread_id!(
[INFO] [stderr]     |  _________________________________-
[INFO] [stderr] 354 | |             move |s: NiceCalcServer<i32>| {cancel(s)});
[INFO] [stderr]     | |______________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |                   Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 478 |           let s = fork!(move |s: Send<(), End>| {
[INFO] [stderr]     |  _________________-
[INFO] [stderr] 479 | |             loop {
[INFO] [stderr] 480 | |                 // Let's trick the reachability checker
[INFO] [stderr] 481 | |                 if false { break; }
[INFO] [stderr] ...   |
[INFO] [stderr] 484 | |             Ok(())
[INFO] [stderr] 485 | |         });
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |                   Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 496 |           let s = fork!(move |s: Send<(), End>| {
[INFO] [stderr]     |  _________________-
[INFO] [stderr] 497 | |             mem::forget(s);
[INFO] [stderr] 498 | |             Ok(())
[INFO] [stderr] 499 | |         });
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:112:42
[INFO] [stderr]     |
[INFO] [stderr] 112 |                   Err(e) => panic!("{}", e.description()),
[INFO] [stderr]     |                                            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 511 |           let r2 = fork!(move |s2: Send<(), End>| {
[INFO] [stderr]     |  __________________-
[INFO] [stderr] 512 | |             let (x, End) = recv(r1)?;
[INFO] [stderr] 513 | |             let End = send(x, s2)?;
[INFO] [stderr] 514 | |             Ok(())
[INFO] [stderr] 515 | |         });
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `"docker" "inspect" "a2c0fc2c2527736ebd7f926b9df5db2f813ae223f6a4ef2d26cd82c324a928b7"`
[INFO] running `"docker" "rm" "-f" "a2c0fc2c2527736ebd7f926b9df5db2f813ae223f6a4ef2d26cd82c324a928b7"`
[INFO] [stdout] a2c0fc2c2527736ebd7f926b9df5db2f813ae223f6a4ef2d26cd82c324a928b7
