[INFO] cloning repository https://github.com/Farteen/rust-crates-playing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Farteen/rust-crates-playing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFarteen%2Frust-crates-playing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFarteen%2Frust-crates-playing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 755edf2c1128cea4cf28c55bea660c8efc714f3f
[INFO] testing Farteen/rust-crates-playing against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFarteen%2Frust-crates-playing" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Farteen/rust-crates-playing on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Farteen/rust-crates-playing
[INFO] finished tweaking git repo https://github.com/Farteen/rust-crates-playing
[INFO] tweaked toml for git repo https://github.com/Farteen/rust-crates-playing written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Farteen/rust-crates-playing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha2 v0.8.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf89b00ce1878108079acc0659448741649fefba15e58b7e2da0edf4a4c8dd48
[INFO] running `Command { std: "docker" "start" "-a" "bf89b00ce1878108079acc0659448741649fefba15e58b7e2da0edf4a4c8dd48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf89b00ce1878108079acc0659448741649fefba15e58b7e2da0edf4a4c8dd48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf89b00ce1878108079acc0659448741649fefba15e58b7e2da0edf4a4c8dd48", kill_on_drop: false }`
[INFO] [stdout] bf89b00ce1878108079acc0659448741649fefba15e58b7e2da0edf4a4c8dd48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ee2f4118f805282301d937328680ec57b8a4037c4d613e25c5b7649ce402861
[INFO] running `Command { std: "docker" "start" "-a" "2ee2f4118f805282301d937328680ec57b8a4037c4d613e25c5b7649ce402861", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rustls v0.16.0
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[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
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[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling enum-as-inner v0.3.1
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]    Compiling serde_with_macros v1.1.0
[INFO] [stderr]    Compiling proc-macro-error v0.4.9
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.9
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[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling futures-util v0.3.4
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[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling trust-dns-proto v0.18.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling trust-dns-resolver v0.18.1
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling serde_with v1.4.0
[INFO] [stderr]    Compiling bson v0.14.0
[INFO] [stderr]    Compiling mongodb v0.9.1
[INFO] [stderr]    Compiling toy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this file contains an unclosed delimiter
[INFO] [stdout]   --> src/main.rs:39:3
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                         - unclosed delimiter
[INFO] [stdout] ...
[INFO] [stdout] 36 |     for db_name in client.list_database_names(None)? {
[INFO] [stdout]    |                                                      - this delimiter might not be properly closed...
[INFO] [stdout] ...
[INFO] [stdout] 39 | }
[INFO] [stdout]    | - ^
[INFO] [stdout]    | |
[INFO] [stdout]    | ...as it matches this but it has different indentation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/main.rs:1:47
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mongodb::{Client, options::ClientOptions, Cursor};
[INFO] [stdout]   |                                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Ok(())
[INFO] [stdout]    |     ^^^^^^ expected `()`, found enum `Result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `Result<(), _>`
[INFO] [stdout] help: consider using a semicolon here
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Ok(());
[INFO] [stdout]    |           ^
[INFO] [stdout] help: you might have meant to return this value
[INFO] [stdout]    |
[INFO] [stdout] 38 |     return Ok(());
[INFO] [stdout]    |     ^^^^^^       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                -------------------------- expected `Result<(), Box<(dyn StdError + 'static)>>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 36 | /     for db_name in client.list_database_names(None)? {
[INFO] [stdout] 37 | |         println!("{}", db_name);
[INFO] [stdout] 38 | |     Ok(())
[INFO] [stdout] 39 | | }
[INFO] [stdout]    | |_^ expected enum `Result`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<(), Box<(dyn StdError + 'static)>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] help: try using a variant of the expected enum
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Ok(for db_name in client.list_database_names(None)? {
[INFO] [stdout] 37 |         println!("{}", db_name);
[INFO] [stdout] 38 |     Ok(())
[INFO] [stdout] 39 | })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toy`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2ee2f4118f805282301d937328680ec57b8a4037c4d613e25c5b7649ce402861", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee2f4118f805282301d937328680ec57b8a4037c4d613e25c5b7649ce402861", kill_on_drop: false }`
[INFO] [stdout] 2ee2f4118f805282301d937328680ec57b8a4037c4d613e25c5b7649ce402861