[INFO] cloning repository https://github.com/Luke-Draper/MSTS-RS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Luke-Draper/MSTS-RS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuke-Draper%2FMSTS-RS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuke-Draper%2FMSTS-RS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9d72b9b988a0718fc951715a684dd8595809648
[INFO] checking Luke-Draper/MSTS-RS against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuke-Draper%2FMSTS-RS" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Luke-Draper/MSTS-RS on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Luke-Draper/MSTS-RS
[INFO] finished tweaking git repo https://github.com/Luke-Draper/MSTS-RS
[INFO] tweaked toml for git repo https://github.com/Luke-Draper/MSTS-RS written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Luke-Draper/MSTS-RS already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 498a0e22fe9054b8808c3ad0f9a02fe8601b63ddf97650b614c9ec36149b2012
[INFO] running `Command { std: "docker" "start" "-a" "498a0e22fe9054b8808c3ad0f9a02fe8601b63ddf97650b614c9ec36149b2012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "498a0e22fe9054b8808c3ad0f9a02fe8601b63ddf97650b614c9ec36149b2012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "498a0e22fe9054b8808c3ad0f9a02fe8601b63ddf97650b614c9ec36149b2012", kill_on_drop: false }`
[INFO] [stdout] 498a0e22fe9054b8808c3ad0f9a02fe8601b63ddf97650b614c9ec36149b2012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46b2de42ce17ebf26f6b571f3214320d0b221a3c00d10bc60411ae8eeb9e9401
[INFO] running `Command { std: "docker" "start" "-a" "46b2de42ce17ebf26f6b571f3214320d0b221a3c00d10bc60411ae8eeb9e9401", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.23
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling derive_builder v0.7.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]    Compiling darling_core v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling darling_macro v0.8.0
[INFO] [stderr]    Compiling darling v0.8.0
[INFO] [stderr]    Compiling derive_builder_core v0.4.0
[INFO] [stderr]     Checking msts_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::file_io`
[INFO] [stdout]  --> src/template_parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::file_io;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tasks`
[INFO] [stdout]  --> src/template_parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::tasks;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/template_parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::file_io`
[INFO] [stdout]  --> src/template_parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::file_io;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tasks`
[INFO] [stdout]  --> src/template_parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::tasks;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/template_parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |     sub_tasks: Vec<&'a Task<'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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 |     sub_tasks: Vec<&'a dyn Task<'a>>,
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:88:21
[INFO] [stdout]    |
[INFO] [stdout] 88 |     sub_tasks: Vec<&'a Task<'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] 88 |     sub_tasks: Vec<&'a dyn Task<'a>>,
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |     sub_tasks: Vec<&'a Task<'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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 |     sub_tasks: Vec<&'a dyn Task<'a>>,
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:88:21
[INFO] [stdout]    |
[INFO] [stdout] 88 |     sub_tasks: Vec<&'a Task<'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] 88 |     sub_tasks: Vec<&'a dyn Task<'a>>,
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:110:44
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn task_factory(input_string: &String) -> &Task {
[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] 110 | fn task_factory(input_string: &String) -> &dyn Task {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:30:68
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&Task>> {
[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] 30 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&dyn Task>> {
[INFO] [stdout]    |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:34:48
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a Task<'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] 34 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a dyn Task<'a>>) {}
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:91:48
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a Task<'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] 91 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a dyn Task<'a>>) {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:105:68
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&Task>> {
[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] 105 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&dyn Task>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:110:44
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn task_factory(input_string: &String) -> &Task {
[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] 110 | fn task_factory(input_string: &String) -> &dyn Task {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:30:68
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&Task>> {
[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] 30 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&dyn Task>> {
[INFO] [stdout]    |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:34:48
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a Task<'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] 34 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a dyn Task<'a>>) {}
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tasks.rs:91:48
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a Task<'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] 91 |     fn set_sub_tasks(&self, in_sub_tasks: Vec<&'a dyn Task<'a>>) {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:105:68
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&Task>> {
[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] 105 |     fn expand_task(&self, run_vars: serde_json::Value) -> Option<Vec<&dyn Task>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this enum variant takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/tasks.rs:106:10
[INFO] [stdout]     |
[INFO] [stdout] 106 |         return Some();
[INFO] [stdout]     |                ^^^^-- an argument of type `Vec<&dyn Task<'_>>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]    --> /rustc/e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682/library/core/src/option.rs:571:5
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 106 |         return Some(/* Vec<&dyn Task<'_>> */);
[INFO] [stdout]     |                    ~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this enum variant takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/tasks.rs:106:10
[INFO] [stdout]     |
[INFO] [stdout] 106 |         return Some();
[INFO] [stdout]     |                ^^^^-- an argument of type `Vec<&dyn Task<'_>>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]    --> /rustc/e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682/library/core/src/option.rs:571:5
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 106 |         return Some(/* Vec<&dyn Task<'_>> */);
[INFO] [stdout]     |                    ~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         } as &Task;
[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] 116 |         } as &dyn Task;
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         } as &Task;
[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] 116 |         } as &dyn Task;
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |         } as &Task;
[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] 120 |         } as &dyn Task;
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |         } as &Task;
[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] 120 |         } as &dyn Task;
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:122:26
[INFO] [stdout]     |
[INFO] [stdout] 122 |         return &EndTask {} as &Task;
[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] 122 |         return &EndTask {} as &dyn Task;
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:122:26
[INFO] [stdout]     |
[INFO] [stdout] 122 |         return &EndTask {} as &Task;
[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] 122 |         return &EndTask {} as &dyn Task;
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tasks.rs:123:34
[INFO] [stdout]     |
[INFO] [stdout] 123 |       } else if task_type == TASK_VAR {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 124 | |     } else if task_type == TASK_VAR {
[INFO] [stdout]     | |_____^ expected `&dyn Task<'_>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&dyn Task<'_>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tasks.rs:123:34
[INFO] [stdout]     |
[INFO] [stdout] 123 |       } else if task_type == TASK_VAR {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 124 | |     } else if task_type == TASK_VAR {
[INFO] [stdout]     | |_____^ expected `&dyn Task<'_>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&dyn Task<'_>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tasks.rs:124:34
[INFO] [stdout]     |
[INFO] [stdout] 124 |       } else if task_type == TASK_VAR {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 125 | |     } else if task_type == TASK_VAR {
[INFO] [stdout]     | |_____^ expected `&dyn Task<'_>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&dyn Task<'_>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tasks.rs:124:34
[INFO] [stdout]     |
[INFO] [stdout] 124 |       } else if task_type == TASK_VAR {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 125 | |     } else if task_type == TASK_VAR {
[INFO] [stdout]     | |_____^ expected `&dyn Task<'_>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&dyn Task<'_>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tasks.rs:125:34
[INFO] [stdout]     |
[INFO] [stdout] 125 |       } else if task_type == TASK_VAR {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 126 | |     } else {
[INFO] [stdout]     | |_____^ expected `&dyn Task<'_>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&dyn Task<'_>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/tasks.rs:125:34
[INFO] [stdout]     |
[INFO] [stdout] 125 |       } else if task_type == TASK_VAR {
[INFO] [stdout]     |  _____________________________________^
[INFO] [stdout] 126 | |     } else {
[INFO] [stdout]     | |_____^ expected `&dyn Task<'_>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&dyn Task<'_>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         } as &Task;
[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] 129 |         } as &dyn Task;
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tasks.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         } as &Task;
[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] 129 |         } as &dyn Task;
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msts_rs` (bin "msts_rs" test) due to 5 previous errors; 14 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `msts_rs` (bin "msts_rs") due to 5 previous errors; 14 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "46b2de42ce17ebf26f6b571f3214320d0b221a3c00d10bc60411ae8eeb9e9401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46b2de42ce17ebf26f6b571f3214320d0b221a3c00d10bc60411ae8eeb9e9401", kill_on_drop: false }`
[INFO] [stdout] 46b2de42ce17ebf26f6b571f3214320d0b221a3c00d10bc60411ae8eeb9e9401
