[INFO] cloning repository https://github.com/Ketankhunti/fearless_concurency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ketankhunti/fearless_concurency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKetankhunti%2Ffearless_concurency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKetankhunti%2Ffearless_concurency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4eacba5f6b6b6fa1c2b7aac062320e0736386f0
[INFO] testing Ketankhunti/fearless_concurency against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKetankhunti%2Ffearless_concurency" "/workspace/builds/worker-18/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ketankhunti/fearless_concurency on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ketankhunti/fearless_concurency
[INFO] finished tweaking git repo https://github.com/Ketankhunti/fearless_concurency
[INFO] tweaked toml for git repo https://github.com/Ketankhunti/fearless_concurency written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate git repo https://github.com/Ketankhunti/fearless_concurency already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4c2175635dc364d4f36f1c428a5e25e937676bf5f3a5e86746667bec3d8c18e
[INFO] running `Command { std: "docker" "start" "-a" "b4c2175635dc364d4f36f1c428a5e25e937676bf5f3a5e86746667bec3d8c18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4c2175635dc364d4f36f1c428a5e25e937676bf5f3a5e86746667bec3d8c18e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4c2175635dc364d4f36f1c428a5e25e937676bf5f3a5e86746667bec3d8c18e", kill_on_drop: false }`
[INFO] [stdout] b4c2175635dc364d4f36f1c428a5e25e937676bf5f3a5e86746667bec3d8c18e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e87bafa007eabbbea4a54617044dc814de2383dbaa0c828406b0a20d468bc89f
[INFO] running `Command { std: "docker" "start" "-a" "e87bafa007eabbbea4a54617044dc814de2383dbaa0c828406b0a20d468bc89f", kill_on_drop: false }`
[INFO] [stderr]    Compiling fearless_concurency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mpsc`
[INFO] [stdout]  --> src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, mpsc, Mutex};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "e87bafa007eabbbea4a54617044dc814de2383dbaa0c828406b0a20d468bc89f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87bafa007eabbbea4a54617044dc814de2383dbaa0c828406b0a20d468bc89f", kill_on_drop: false }`
[INFO] [stdout] e87bafa007eabbbea4a54617044dc814de2383dbaa0c828406b0a20d468bc89f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93a4b0ad22b51dd54f68530ed97993ec67d88a8ed82d76260d2ccf8c5b924029
[INFO] running `Command { std: "docker" "start" "-a" "93a4b0ad22b51dd54f68530ed97993ec67d88a8ed82d76260d2ccf8c5b924029", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fearless_concurency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mpsc`
[INFO] [stdout]  --> src/main.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, mpsc, Mutex};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.75s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/fearless_concurency-186c34a516f79406)
[INFO] running `Command { std: "docker" "inspect" "93a4b0ad22b51dd54f68530ed97993ec67d88a8ed82d76260d2ccf8c5b924029", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93a4b0ad22b51dd54f68530ed97993ec67d88a8ed82d76260d2ccf8c5b924029", kill_on_drop: false }`
[INFO] [stdout] 93a4b0ad22b51dd54f68530ed97993ec67d88a8ed82d76260d2ccf8c5b924029
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5077e55bce18262de3e43b508a263efd6b6d6567310c458f73e66c2f219c9f6c
[INFO] running `Command { std: "docker" "start" "-a" "5077e55bce18262de3e43b508a263efd6b6d6567310c458f73e66c2f219c9f6c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mpsc`
[INFO] [stderr]  --> src/main.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, mpsc, Mutex};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fearless_concurency` (bin "fearless_concurency" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fearless_concurency-186c34a516f79406)
[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" "5077e55bce18262de3e43b508a263efd6b6d6567310c458f73e66c2f219c9f6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5077e55bce18262de3e43b508a263efd6b6d6567310c458f73e66c2f219c9f6c", kill_on_drop: false }`
[INFO] [stdout] 5077e55bce18262de3e43b508a263efd6b6d6567310c458f73e66c2f219c9f6c