[INFO] fetching crate build-probe-mpi 0.1.1...
[INFO] testing build-probe-mpi-0.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate build-probe-mpi 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate build-probe-mpi 0.1.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate build-probe-mpi 0.1.1
[INFO] finished tweaking crates.io crate build-probe-mpi 0.1.1
[INFO] tweaked toml for crates.io crate build-probe-mpi 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85ed366d5d310e612ed00688136f74753974012b96fdc5148d28b733da1c9268
[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" "85ed366d5d310e612ed00688136f74753974012b96fdc5148d28b733da1c9268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85ed366d5d310e612ed00688136f74753974012b96fdc5148d28b733da1c9268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85ed366d5d310e612ed00688136f74753974012b96fdc5148d28b733da1c9268", kill_on_drop: false }`
[INFO] [stdout] 85ed366d5d310e612ed00688136f74753974012b96fdc5148d28b733da1c9268
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 3b46454e9b8eb1dda383c0c9940255efbe7268ddc3795f9086cf7409461f52dd
[INFO] running `Command { std: "docker" "start" "-a" "3b46454e9b8eb1dda383c0c9940255efbe7268ddc3795f9086cf7409461f52dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling build-probe-mpi v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:64:43
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[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 2015) 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] 64 - pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[INFO] [stdout] 64 + pub fn probe() -> Result<Library, Vec<Box<dyn Error>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:69:52
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 69 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 69 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:74:52
[INFO] [stdout]    |
[INFO] [stdout] 74 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 74 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 74 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:79:52
[INFO] [stdout]    |
[INFO] [stdout] 79 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 79 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 79 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `Command { std: "docker" "inspect" "3b46454e9b8eb1dda383c0c9940255efbe7268ddc3795f9086cf7409461f52dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b46454e9b8eb1dda383c0c9940255efbe7268ddc3795f9086cf7409461f52dd", kill_on_drop: false }`
[INFO] [stdout] 3b46454e9b8eb1dda383c0c9940255efbe7268ddc3795f9086cf7409461f52dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--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] 6df8fc3d92e0e8c2f6777c5402fca047fdf8894347faa0c5674845bd2b232943
[INFO] running `Command { std: "docker" "start" "-a" "6df8fc3d92e0e8c2f6777c5402fca047fdf8894347faa0c5674845bd2b232943", kill_on_drop: false }`
[INFO] [stderr]    Compiling build-probe-mpi v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:64:43
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[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 2015) 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] 64 - pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[INFO] [stdout] 64 + pub fn probe() -> Result<Library, Vec<Box<dyn Error>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:69:52
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 69 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 69 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:74:52
[INFO] [stdout]    |
[INFO] [stdout] 74 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 74 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 74 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:79:52
[INFO] [stdout]    |
[INFO] [stdout] 79 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 79 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 79 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:64:43
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[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 2015) 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] 64 - pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[INFO] [stdout] 64 + pub fn probe() -> Result<Library, Vec<Box<dyn Error>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:69:52
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 69 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 69 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:74:52
[INFO] [stdout]    |
[INFO] [stdout] 74 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 74 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 74 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:79:52
[INFO] [stdout]    |
[INFO] [stdout] 79 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout]    |                                                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 79 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stdout] 79 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "6df8fc3d92e0e8c2f6777c5402fca047fdf8894347faa0c5674845bd2b232943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6df8fc3d92e0e8c2f6777c5402fca047fdf8894347faa0c5674845bd2b232943", kill_on_drop: false }`
[INFO] [stdout] 6df8fc3d92e0e8c2f6777c5402fca047fdf8894347faa0c5674845bd2b232943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] abd2f8987a1b3b1149b62db50c4647ab3f5de4d43c6f40afda121b43a57a8059
[INFO] running `Command { std: "docker" "start" "-a" "abd2f8987a1b3b1149b62db50c4647ab3f5de4d43c6f40afda121b43a57a8059", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:64:43
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 64 | pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[INFO] [stdout] 
[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 2015) 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] 64 - pub fn probe() -> Result<Library, Vec<Box<Error>>> {
[INFO] [stderr] 64 + pub fn probe() -> Result<Library, Vec<Box<dyn Error>>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:69:52
[INFO] [stderr]    |
[INFO] [stderr] 69 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stderr]    |                                                    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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] 69 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stderr] 69 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:74:52
[INFO] [stderr]    |
[INFO] [stderr] 74 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stderr]    |                                                    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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] 74 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stderr] 74 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:79:52
[INFO] [stderr]    |
[INFO] [stderr] 79 |         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stderr]    |                                                    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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] 79 -         Err(err) => errs.push(Box::new(err) as Box<Error>)
[INFO] [stderr] 79 +         Err(err) => errs.push(Box::new(err) as Box<dyn Error>)
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `build-probe-mpi` (lib) generated 4 warnings
[INFO] [stderr] warning: `build-probe-mpi` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/build_probe_mpi-50f56e90ac5b200a)
[INFO] [stderr]    Doc-tests build-probe-mpi
[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" "abd2f8987a1b3b1149b62db50c4647ab3f5de4d43c6f40afda121b43a57a8059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abd2f8987a1b3b1149b62db50c4647ab3f5de4d43c6f40afda121b43a57a8059", kill_on_drop: false }`
[INFO] [stdout] abd2f8987a1b3b1149b62db50c4647ab3f5de4d43c6f40afda121b43a57a8059