[INFO] cloning repository https://github.com/iamazy/rust-cookbook-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamazy/rust-cookbook-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Frust-cookbook-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Frust-cookbook-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9655bc474384f12ed96d3d75ee65931d65ba9c6
[INFO] testing iamazy/rust-cookbook-code 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%2Fiamazy%2Frust-cookbook-code" "/workspace/builds/worker-43/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-43/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamazy/rust-cookbook-code 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/iamazy/rust-cookbook-code
[INFO] finished tweaking git repo https://github.com/iamazy/rust-cookbook-code
[INFO] tweaked toml for git repo https://github.com/iamazy/rust-cookbook-code written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate git repo https://github.com/iamazy/rust-cookbook-code 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 }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 94dceab55f8d1865a95791f5d1df57ce2d9e622b7db118e276bc27c7772230fc
[INFO] running `Command { std: "docker" "start" "-a" "94dceab55f8d1865a95791f5d1df57ce2d9e622b7db118e276bc27c7772230fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94dceab55f8d1865a95791f5d1df57ce2d9e622b7db118e276bc27c7772230fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94dceab55f8d1865a95791f5d1df57ce2d9e622b7db118e276bc27c7772230fc", kill_on_drop: false }`
[INFO] [stdout] 94dceab55f8d1865a95791f5d1df57ce2d9e622b7db118e276bc27c7772230fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 18938c2aa1d24ef66b203a52f49567d5120208baf4cd3c68f3b7c12aece89505
[INFO] running `Command { std: "docker" "start" "-a" "18938c2aa1d24ef66b203a52f49567d5120208baf4cd3c68f3b7c12aece89505", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]    Compiling raft-proto v0.6.0-alpha
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[INFO] [stderr]    Compiling rust-cookbook-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.01s
[INFO] running `Command { std: "docker" "inspect" "18938c2aa1d24ef66b203a52f49567d5120208baf4cd3c68f3b7c12aece89505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18938c2aa1d24ef66b203a52f49567d5120208baf4cd3c68f3b7c12aece89505", kill_on_drop: false }`
[INFO] [stdout] 18938c2aa1d24ef66b203a52f49567d5120208baf4cd3c68f3b7c12aece89505
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] c27e0de0562a28c266558d8b3fb982cc1170f6510ed6ab03b51156059a7a35b0
[INFO] running `Command { std: "docker" "start" "-a" "c27e0de0562a28c266558d8b3fb982cc1170f6510ed6ab03b51156059a7a35b0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-cookbook-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]  --> examples/unpin.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     std::mem::replace(&mut *pinned_string, "other".to_string());
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 54s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_cookbook_code-b05493de597732be)
[INFO] running `Command { std: "docker" "inspect" "c27e0de0562a28c266558d8b3fb982cc1170f6510ed6ab03b51156059a7a35b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c27e0de0562a28c266558d8b3fb982cc1170f6510ed6ab03b51156059a7a35b0", kill_on_drop: false }`
[INFO] [stdout] c27e0de0562a28c266558d8b3fb982cc1170f6510ed6ab03b51156059a7a35b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 8ae672a8adcc45d7134b9eb097238c421ca2f98008ee65c0b4369751f63b2fa2
[INFO] running `Command { std: "docker" "start" "-a" "8ae672a8adcc45d7134b9eb097238c421ca2f98008ee65c0b4369751f63b2fa2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]  --> examples/unpin.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     std::mem::replace(&mut *pinned_string, "other".to_string());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-cookbook-code` (example "unpin") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.22s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_cookbook_code-b05493de597732be)
[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" "8ae672a8adcc45d7134b9eb097238c421ca2f98008ee65c0b4369751f63b2fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ae672a8adcc45d7134b9eb097238c421ca2f98008ee65c0b4369751f63b2fa2", kill_on_drop: false }`
[INFO] [stdout] 8ae672a8adcc45d7134b9eb097238c421ca2f98008ee65c0b4369751f63b2fa2