[INFO] cloning repository https://github.com/prevy/prevy-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prevy/prevy-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprevy%2Fprevy-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprevy%2Fprevy-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8e392dc545f284440a4ddda2bdf23e78ec83cc4
[INFO] testing prevy/prevy-rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprevy%2Fprevy-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prevy/prevy-rust 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 git repo https://github.com/prevy/prevy-rust
[INFO] finished tweaking git repo https://github.com/prevy/prevy-rust
[INFO] tweaked toml for git repo https://github.com/prevy/prevy-rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/prevy/prevy-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atty v0.1.2
[INFO] [stderr]   Downloaded xdg-basedir v1.0.0
[INFO] [stderr]   Downloaded threadpool v1.3.0
[INFO] [stderr]   Downloaded clap v2.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] d418a14ee0ff9574cc0c84fca6c50b0909841e222afd8947635f45cf90d6fee5
[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" "d418a14ee0ff9574cc0c84fca6c50b0909841e222afd8947635f45cf90d6fee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d418a14ee0ff9574cc0c84fca6c50b0909841e222afd8947635f45cf90d6fee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d418a14ee0ff9574cc0c84fca6c50b0909841e222afd8947635f45cf90d6fee5", kill_on_drop: false }`
[INFO] [stdout] d418a14ee0ff9574cc0c84fca6c50b0909841e222afd8947635f45cf90d6fee5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] bd1cb7d76af56fab9a513454b019e87ff8942953b7d824323b83c0405e9731bc
[INFO] running `Command { std: "docker" "start" "-a" "bd1cb7d76af56fab9a513454b019e87ff8942953b7d824323b83c0405e9731bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.2.7
[INFO] [stderr]    Compiling libc v0.2.12
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling ansi_term v0.7.2
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling unicode-width v0.1.3
[INFO] [stderr]    Compiling strsim v0.4.1
[INFO] [stderr]    Compiling yaml-rust v0.3.3
[INFO] [stderr]    Compiling xdg-basedir v1.0.0
[INFO] [stderr]    Compiling threadpool v1.3.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]    Compiling clap v2.6.0
[INFO] [stderr]    Compiling prevy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/vcs/mod.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn from_info(RepoInfo) -> Self where Self: Sized;
[INFO] [stdout]    |                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: RepoInfo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/vcs/mod.rs:99:15
[INFO] [stdout]    |
[INFO] [stdout] 99 |         path: try!(as_string(hash.0)),
[INFO] [stdout]    |               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/vcs/mod.rs:104:34
[INFO] [stdout]     |
[INFO] [stdout] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/vcs/mod.rs:104:59
[INFO] [stdout]     |
[INFO] [stdout] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stdout]     |                                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/commands/mod.rs:6:49
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[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] 6 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stdout] 6 +     fn run(repos: Vec<Box<Repo + Send>>) -> Box<dyn Fn() -> ()>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/commands/mod.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[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] 6 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stdout] 6 +     fn run(repos: Vec<Box<dyn Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context/workspace.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub repos: Vec<Box<Repo>>,
[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] 24 -     pub repos: Vec<Box<Repo>>,
[INFO] [stdout] 24 +     pub repos: Vec<Box<dyn Repo>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl fmt::Debug for Repo {
[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] 81 - impl fmt::Debug for Repo {
[INFO] [stdout] 81 + impl fmt::Debug for dyn Repo {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:87:20
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl Clone for Box<Repo> {
[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] 87 - impl Clone for Box<Repo> {
[INFO] [stdout] 87 + impl Clone for Box<dyn Repo> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:97:54
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[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] 97 - pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[INFO] [stdout] 97 + pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<dyn Repo>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:62:32
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn clone_box(&self) -> Box<Repo>;
[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] 62 -     fn clone_box(&self) -> Box<Repo>;
[INFO] [stdout] 62 +     fn clone_box(&self) -> Box<dyn Repo>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:68:32
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn clone_box(&self) -> Box<Repo> {
[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] 68 -     fn clone_box(&self) -> Box<Repo> {
[INFO] [stdout] 68 +     fn clone_box(&self) -> Box<dyn Repo> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:88:28
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn clone(&self) -> Box<Repo> {
[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] 88 -     fn clone(&self) -> Box<Repo> {
[INFO] [stdout] 88 +     fn clone(&self) -> Box<dyn Repo> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/commands/update.rs:11:49
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[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] 11 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stdout] 11 +     fn run(repos: Vec<Box<Repo + Send>>) -> Box<dyn Fn() -> ()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/commands/update.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[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] 11 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stdout] 11 +     fn run(repos: Vec<Box<dyn Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/core/constants.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     var.trim_left_matches(VAR_PREFIX).to_lowercase().to_string()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/commands/update.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let (tx, rx) = channel();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.35s
[INFO] running `Command { std: "docker" "inspect" "bd1cb7d76af56fab9a513454b019e87ff8942953b7d824323b83c0405e9731bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd1cb7d76af56fab9a513454b019e87ff8942953b7d824323b83c0405e9731bc", kill_on_drop: false }`
[INFO] [stdout] bd1cb7d76af56fab9a513454b019e87ff8942953b7d824323b83c0405e9731bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] 57bdb04763b1cad40f65aa0abf54e92666246a080eeaae9aac856786bb402280
[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" "57bdb04763b1cad40f65aa0abf54e92666246a080eeaae9aac856786bb402280", kill_on_drop: false }`
[INFO] [stderr]    Compiling prevy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/vcs/mod.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn from_info(RepoInfo) -> Self where Self: Sized;
[INFO] [stdout]    |                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: RepoInfo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/vcs/mod.rs:99:15
[INFO] [stdout]    |
[INFO] [stdout] 99 |         path: try!(as_string(hash.0)),
[INFO] [stdout]    |               ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/vcs/mod.rs:104:34
[INFO] [stdout]     |
[INFO] [stdout] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/vcs/mod.rs:104:59
[INFO] [stdout]     |
[INFO] [stdout] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stdout]     |                                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/commands/mod.rs:6:49
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[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] 6 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stdout] 6 +     fn run(repos: Vec<Box<Repo + Send>>) -> Box<dyn Fn() -> ()>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/commands/mod.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[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] 6 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stdout] 6 +     fn run(repos: Vec<Box<dyn Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/context/workspace.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub repos: Vec<Box<Repo>>,
[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] 24 -     pub repos: Vec<Box<Repo>>,
[INFO] [stdout] 24 +     pub repos: Vec<Box<dyn Repo>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl fmt::Debug for Repo {
[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] 81 - impl fmt::Debug for Repo {
[INFO] [stdout] 81 + impl fmt::Debug for dyn Repo {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:87:20
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl Clone for Box<Repo> {
[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] 87 - impl Clone for Box<Repo> {
[INFO] [stdout] 87 + impl Clone for Box<dyn Repo> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:97:54
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[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] 97 - pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[INFO] [stdout] 97 + pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<dyn Repo>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:62:32
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn clone_box(&self) -> Box<Repo>;
[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] 62 -     fn clone_box(&self) -> Box<Repo>;
[INFO] [stdout] 62 +     fn clone_box(&self) -> Box<dyn Repo>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:68:32
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn clone_box(&self) -> Box<Repo> {
[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] 68 -     fn clone_box(&self) -> Box<Repo> {
[INFO] [stdout] 68 +     fn clone_box(&self) -> Box<dyn Repo> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vcs/mod.rs:88:28
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn clone(&self) -> Box<Repo> {
[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] 88 -     fn clone(&self) -> Box<Repo> {
[INFO] [stdout] 88 +     fn clone(&self) -> Box<dyn Repo> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/commands/update.rs:11:49
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[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] 11 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stdout] 11 +     fn run(repos: Vec<Box<Repo + Send>>) -> Box<dyn Fn() -> ()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/commands/update.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[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] 11 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stdout] 11 +     fn run(repos: Vec<Box<dyn Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/core/constants.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     var.trim_left_matches(VAR_PREFIX).to_lowercase().to_string()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/commands/update.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let (tx, rx) = channel();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "57bdb04763b1cad40f65aa0abf54e92666246a080eeaae9aac856786bb402280", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57bdb04763b1cad40f65aa0abf54e92666246a080eeaae9aac856786bb402280", kill_on_drop: false }`
[INFO] [stdout] 57bdb04763b1cad40f65aa0abf54e92666246a080eeaae9aac856786bb402280
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] a19ac145feda5b449b512a2da7c0684e028d4a9ff8ccf762184ee8efc9cd3f0b
[INFO] running `Command { std: "docker" "start" "-a" "a19ac145feda5b449b512a2da7c0684e028d4a9ff8ccf762184ee8efc9cd3f0b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/vcs/mod.rs:74:18
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn from_info(RepoInfo) -> Self where Self: Sized;
[INFO] [stderr]    |                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: RepoInfo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/vcs/mod.rs:99:15
[INFO] [stderr]    |
[INFO] [stderr] 99 |         path: try!(as_string(hash.0)),
[INFO] [stderr]    |               ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/vcs/mod.rs:104:34
[INFO] [stderr]     |
[INFO] [stderr] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/vcs/mod.rs:104:59
[INFO] [stderr]     |
[INFO] [stderr] 104 |         repo_info.remotes.insert(try!(as_string(remote)), try!(as_string(url)));
[INFO] [stderr]     |                                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/commands/mod.rs:6:49
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[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] 6 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr] 6 +     fn run(repos: Vec<Box<Repo + Send>>) -> Box<dyn Fn() -> ()>;
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/commands/mod.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[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] 6 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr] 6 +     fn run(repos: Vec<Box<dyn Repo + Send>>) -> Box<Fn() -> ()>;
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context/workspace.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub repos: Vec<Box<Repo>>,
[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] 24 -     pub repos: Vec<Box<Repo>>,
[INFO] [stderr] 24 +     pub repos: Vec<Box<dyn Repo>>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 | impl fmt::Debug for Repo {
[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] 81 - impl fmt::Debug for Repo {
[INFO] [stderr] 81 + impl fmt::Debug for dyn Repo {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:87:20
[INFO] [stderr]    |
[INFO] [stderr] 87 | impl Clone for Box<Repo> {
[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] 87 - impl Clone for Box<Repo> {
[INFO] [stderr] 87 + impl Clone for Box<dyn Repo> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:97:54
[INFO] [stderr]    |
[INFO] [stderr] 97 | pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[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] 97 - pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<Repo>> {
[INFO] [stderr] 97 + pub fn from_hash(hash: (&Yaml, &Yaml)) -> Result<Box<dyn Repo>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:62:32
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn clone_box(&self) -> Box<Repo>;
[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] 62 -     fn clone_box(&self) -> Box<Repo>;
[INFO] [stderr] 62 +     fn clone_box(&self) -> Box<dyn Repo>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:68:32
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn clone_box(&self) -> Box<Repo> {
[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] 68 -     fn clone_box(&self) -> Box<Repo> {
[INFO] [stderr] 68 +     fn clone_box(&self) -> Box<dyn Repo> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vcs/mod.rs:88:28
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn clone(&self) -> Box<Repo> {
[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] 88 -     fn clone(&self) -> Box<Repo> {
[INFO] [stderr] 88 +     fn clone(&self) -> Box<dyn Repo> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/commands/update.rs:11:49
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[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] 11 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr] 11 +     fn run(repos: Vec<Box<Repo + Send>>) -> Box<dyn Fn() -> ()> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/commands/update.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[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] 11 -     fn run(repos: Vec<Box<Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr] 11 +     fn run(repos: Vec<Box<dyn Repo + Send>>) -> Box<Fn() -> ()> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]   --> src/core/constants.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     var.trim_left_matches(VAR_PREFIX).to_lowercase().to_string()
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   --> src/commands/update.rs:13:18
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let (tx, rx) = channel();
[INFO] [stderr]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `prevy` (bin "prevy" test) generated 17 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prevy-35a00b2fd3ed2e49)
[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" "a19ac145feda5b449b512a2da7c0684e028d4a9ff8ccf762184ee8efc9cd3f0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a19ac145feda5b449b512a2da7c0684e028d4a9ff8ccf762184ee8efc9cd3f0b", kill_on_drop: false }`
[INFO] [stdout] a19ac145feda5b449b512a2da7c0684e028d4a9ff8ccf762184ee8efc9cd3f0b