[INFO] cloning repository https://github.com/chirdeeptomar/rust-datastructures-alogorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chirdeeptomar/rust-datastructures-alogorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchirdeeptomar%2Frust-datastructures-alogorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchirdeeptomar%2Frust-datastructures-alogorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99ffcec56418567de055efeffabbe951b6f3cf87
[INFO] testing chirdeeptomar/rust-datastructures-alogorithms 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%2Fchirdeeptomar%2Frust-datastructures-alogorithms" "/workspace/builds/worker-88/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-88/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chirdeeptomar/rust-datastructures-alogorithms 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/chirdeeptomar/rust-datastructures-alogorithms
[INFO] finished tweaking git repo https://github.com/chirdeeptomar/rust-datastructures-alogorithms
[INFO] tweaked toml for git repo https://github.com/chirdeeptomar/rust-datastructures-alogorithms written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] crate git repo https://github.com/chirdeeptomar/rust-datastructures-alogorithms 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 841b3afdb68be669bcdb980a1b894a676368ef07ac3642cf2f567e0873b7fd22
[INFO] running `Command { std: "docker" "start" "-a" "841b3afdb68be669bcdb980a1b894a676368ef07ac3642cf2f567e0873b7fd22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "841b3afdb68be669bcdb980a1b894a676368ef07ac3642cf2f567e0873b7fd22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "841b3afdb68be669bcdb980a1b894a676368ef07ac3642cf2f567e0873b7fd22", kill_on_drop: false }`
[INFO] [stdout] 841b3afdb68be669bcdb980a1b894a676368ef07ac3642cf2f567e0873b7fd22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 2038c849caff48a5d422041ed45b1f82c19e17deb35596a3b5a8cd7b3bdfa50b
[INFO] running `Command { std: "docker" "start" "-a" "2038c849caff48a5d422041ed45b1f82c19e17deb35596a3b5a8cd7b3bdfa50b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ds_algos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/data_structure.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     value: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]  --> src/data_structure.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     next: Option<Box<Node<T>>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "2038c849caff48a5d422041ed45b1f82c19e17deb35596a3b5a8cd7b3bdfa50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2038c849caff48a5d422041ed45b1f82c19e17deb35596a3b5a8cd7b3bdfa50b", kill_on_drop: false }`
[INFO] [stdout] 2038c849caff48a5d422041ed45b1f82c19e17deb35596a3b5a8cd7b3bdfa50b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] 6ebf533f1760312ed8266ddb066e2e7fdc843649095218442ea40f4d312200d3
[INFO] running `Command { std: "docker" "start" "-a" "6ebf533f1760312ed8266ddb066e2e7fdc843649095218442ea40f4d312200d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ds_algos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/data_structure.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     value: T,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]  --> src/data_structure.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     next: Option<Box<Node<T>>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.41s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/ds_algos-6573661eb88d95a5)
[INFO] running `Command { std: "docker" "inspect" "6ebf533f1760312ed8266ddb066e2e7fdc843649095218442ea40f4d312200d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ebf533f1760312ed8266ddb066e2e7fdc843649095218442ea40f4d312200d3", kill_on_drop: false }`
[INFO] [stdout] 6ebf533f1760312ed8266ddb066e2e7fdc843649095218442ea40f4d312200d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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] d07886ab3c5e6076efcec1e1492d79e8b6094002ef680745b94cd76089c6f466
[INFO] running `Command { std: "docker" "start" "-a" "d07886ab3c5e6076efcec1e1492d79e8b6094002ef680745b94cd76089c6f466", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stdout] 
[INFO] [stderr]  --> src/data_structure.rs:2:5
[INFO] [stdout] running 3 tests
[INFO] [stderr]   |
[INFO] [stdout] test tests::test_has_linkedlist_is_empty ... ok
[INFO] [stderr] 2 |     value: T,
[INFO] [stdout] test tests::test_linkedlist_has_one_item ... ok
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stdout] test tests::test_bubble_sort ... ok
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `next`
[INFO] [stderr]  --> src/data_structure.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     next: Option<Box<Node<T>>>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ds_algos` (bin "ds_algos" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3m 20s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ds_algos-6573661eb88d95a5)
[INFO] running `Command { std: "docker" "inspect" "d07886ab3c5e6076efcec1e1492d79e8b6094002ef680745b94cd76089c6f466", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d07886ab3c5e6076efcec1e1492d79e8b6094002ef680745b94cd76089c6f466", kill_on_drop: false }`
[INFO] [stdout] d07886ab3c5e6076efcec1e1492d79e8b6094002ef680745b94cd76089c6f466