[INFO] cloning repository https://github.com/Lulzmatt27/recursive_iterators_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lulzmatt27/recursive_iterators_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLulzmatt27%2Frecursive_iterators_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLulzmatt27%2Frecursive_iterators_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54f3a9c78972cae35a324a74e7c5e2a28c3e3e05
[INFO] testing Lulzmatt27/recursive_iterators_rust against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLulzmatt27%2Frecursive_iterators_rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lulzmatt27/recursive_iterators_rust on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lulzmatt27/recursive_iterators_rust
[INFO] finished tweaking git repo https://github.com/Lulzmatt27/recursive_iterators_rust
[INFO] tweaked toml for git repo https://github.com/Lulzmatt27/recursive_iterators_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Lulzmatt27/recursive_iterators_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7df0c16f585aa511e17b4e6d3d693d0a0b04ffade4a63e6756780f6e2e548fa2
[INFO] running `Command { std: "docker" "start" "-a" "7df0c16f585aa511e17b4e6d3d693d0a0b04ffade4a63e6756780f6e2e548fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7df0c16f585aa511e17b4e6d3d693d0a0b04ffade4a63e6756780f6e2e548fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7df0c16f585aa511e17b4e6d3d693d0a0b04ffade4a63e6756780f6e2e548fa2", kill_on_drop: false }`
[INFO] [stdout] 7df0c16f585aa511e17b4e6d3d693d0a0b04ffade4a63e6756780f6e2e548fa2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08d41c1a6014e1e77c576655ad0fa83aaa4083e8317334f2b9b2d5e55917c72b
[INFO] running `Command { std: "docker" "start" "-a" "08d41c1a6014e1e77c576655ad0fa83aaa4083e8317334f2b9b2d5e55917c72b", kill_on_drop: false }`
[INFO] [stderr]    Compiling recursive_iterators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     viter: Box<Iterator<Item=&'a i32> + 'a>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 -     viter: Box<Iterator<Item=&'a i32> + 'a>,
[INFO] [stdout] 8 +     viter: Box<dyn Iterator<Item=&'a i32> + 'a>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     citer: Box<Iterator<Item=&'a Node> + 'a>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 -     citer: Box<Iterator<Item=&'a Node> + 'a>,
[INFO] [stdout] 9 +     citer: Box<dyn Iterator<Item=&'a Node> + 'a>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn values<'a>(&'a self) -> Box<Iterator<Item = &i32>+ 'a > {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     pub fn values<'a>(&'a self) -> Box<Iterator<Item = &i32>+ 'a > {
[INFO] [stdout] 39 +     pub fn values<'a>(&'a self) -> Box<dyn Iterator<Item = &i32>+ 'a > {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "08d41c1a6014e1e77c576655ad0fa83aaa4083e8317334f2b9b2d5e55917c72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d41c1a6014e1e77c576655ad0fa83aaa4083e8317334f2b9b2d5e55917c72b", kill_on_drop: false }`
[INFO] [stdout] 08d41c1a6014e1e77c576655ad0fa83aaa4083e8317334f2b9b2d5e55917c72b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 030edf6e1e03398ed4f3874e023ca562cd3e591cf61598593811dfff5a43556b
[INFO] running `Command { std: "docker" "start" "-a" "030edf6e1e03398ed4f3874e023ca562cd3e591cf61598593811dfff5a43556b", kill_on_drop: false }`
[INFO] [stderr]    Compiling recursive_iterators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     viter: Box<Iterator<Item=&'a i32> + 'a>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 -     viter: Box<Iterator<Item=&'a i32> + 'a>,
[INFO] [stdout] 8 +     viter: Box<dyn Iterator<Item=&'a i32> + 'a>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     citer: Box<Iterator<Item=&'a Node> + 'a>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 -     citer: Box<Iterator<Item=&'a Node> + 'a>,
[INFO] [stdout] 9 +     citer: Box<dyn Iterator<Item=&'a Node> + 'a>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn values<'a>(&'a self) -> Box<Iterator<Item = &i32>+ 'a > {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     pub fn values<'a>(&'a self) -> Box<Iterator<Item = &i32>+ 'a > {
[INFO] [stdout] 39 +     pub fn values<'a>(&'a self) -> Box<dyn Iterator<Item = &i32>+ 'a > {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.60s
[INFO] running `Command { std: "docker" "inspect" "030edf6e1e03398ed4f3874e023ca562cd3e591cf61598593811dfff5a43556b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030edf6e1e03398ed4f3874e023ca562cd3e591cf61598593811dfff5a43556b", kill_on_drop: false }`
[INFO] [stdout] 030edf6e1e03398ed4f3874e023ca562cd3e591cf61598593811dfff5a43556b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 56b6417f0873d1efd3563829f8b899723e500b93b1056219bc70a8f2cd4b3713
[INFO] running `Command { std: "docker" "start" "-a" "56b6417f0873d1efd3563829f8b899723e500b93b1056219bc70a8f2cd4b3713", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:8:16
[INFO] [stderr]   |
[INFO] [stderr] 8 |     viter: Box<Iterator<Item=&'a i32> + 'a>,
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 8 -     viter: Box<Iterator<Item=&'a i32> + 'a>,
[INFO] [stderr] 8 +     viter: Box<dyn Iterator<Item=&'a i32> + 'a>,
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     citer: Box<Iterator<Item=&'a Node> + 'a>,
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 9 -     citer: Box<Iterator<Item=&'a Node> + 'a>,
[INFO] [stderr] 9 +     citer: Box<dyn Iterator<Item=&'a Node> + 'a>,
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:39:40
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn values<'a>(&'a self) -> Box<Iterator<Item = &i32>+ 'a > {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 39 -     pub fn values<'a>(&'a self) -> Box<Iterator<Item = &i32>+ 'a > {
[INFO] [stderr] 39 +     pub fn values<'a>(&'a self) -> Box<dyn Iterator<Item = &i32>+ 'a > {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `recursive_iterators` (bin "recursive_iterators" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/recursive_iterators-86a354e864529949)
[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] running `Command { std: "docker" "inspect" "56b6417f0873d1efd3563829f8b899723e500b93b1056219bc70a8f2cd4b3713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b6417f0873d1efd3563829f8b899723e500b93b1056219bc70a8f2cd4b3713", kill_on_drop: false }`
[INFO] [stdout] 56b6417f0873d1efd3563829f8b899723e500b93b1056219bc70a8f2cd4b3713