[INFO] updating cached repository https://github.com/swissmanu/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fa1a2ea024e3e839f42a1d858c807eefa2e623f
[INFO] testing swissmanu/rust-playground against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswissmanu%2Frust-playground" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/swissmanu/rust-playground on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/swissmanu/rust-playground
[INFO] finished tweaking git repo https://github.com/swissmanu/rust-playground
[INFO] tweaked toml for git repo https://github.com/swissmanu/rust-playground written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/swissmanu/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5830b2b765e4ddbc9ea8b0da3624fac1e5e5a8cec2cb7d2c6c5a516c72f4fd66
[INFO] running `Command { std: "docker" "start" "-a" "5830b2b765e4ddbc9ea8b0da3624fac1e5e5a8cec2cb7d2c6c5a516c72f4fd66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5830b2b765e4ddbc9ea8b0da3624fac1e5e5a8cec2cb7d2c6c5a516c72f4fd66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5830b2b765e4ddbc9ea8b0da3624fac1e5e5a8cec2cb7d2c6c5a516c72f4fd66", kill_on_drop: false }`
[INFO] [stdout] 5830b2b765e4ddbc9ea8b0da3624fac1e5e5a8cec2cb7d2c6c5a516c72f4fd66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ccc2bc31a700bea54418e4e33220ab2cd1736a45d35d230e4d1e241e5250065
[INFO] running `Command { std: "docker" "start" "-a" "6ccc2bc31a700bea54418e4e33220ab2cd1736a45d35d230e4d1e241e5250065", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling helloworld v0.0.1 (/opt/rustwide/workdir/helloworld)
[INFO] [stderr]    Compiling mutability v0.1.0 (/opt/rustwide/workdir/mutability)
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> ownership/src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 |   let x = "manu"; // type is &str
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `Command { std: "docker" "inspect" "6ccc2bc31a700bea54418e4e33220ab2cd1736a45d35d230e4d1e241e5250065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ccc2bc31a700bea54418e4e33220ab2cd1736a45d35d230e4d1e241e5250065", kill_on_drop: false }`
[INFO] [stdout] 6ccc2bc31a700bea54418e4e33220ab2cd1736a45d35d230e4d1e241e5250065
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 588fc87b5537e2bda18c145a02f6b7284f20f4b0792ba81027b3dbdf85382bb8
[INFO] running `Command { std: "docker" "start" "-a" "588fc87b5537e2bda18c145a02f6b7284f20f4b0792ba81027b3dbdf85382bb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling helloworld v0.0.1 (/opt/rustwide/workdir/helloworld)
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stderr]    Compiling mutability v0.1.0 (/opt/rustwide/workdir/mutability)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> ownership/src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 |   let x = "manu"; // type is &str
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "588fc87b5537e2bda18c145a02f6b7284f20f4b0792ba81027b3dbdf85382bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "588fc87b5537e2bda18c145a02f6b7284f20f4b0792ba81027b3dbdf85382bb8", kill_on_drop: false }`
[INFO] [stdout] 588fc87b5537e2bda18c145a02f6b7284f20f4b0792ba81027b3dbdf85382bb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e9ee2868534a8fc053cf9eadaa1715475cafc8017213919690095a5a29dd80f4
[INFO] running `Command { std: "docker" "start" "-a" "e9ee2868534a8fc053cf9eadaa1715475cafc8017213919690095a5a29dd80f4", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stdout] 
[INFO] [stderr]   --> ownership/src/main.rs:22:7
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 22 |   let x = "manu"; // type is &str
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ownership` (bin "ownership" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/helloworld-9690b4b8741c9c08)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mutability-2d2e318e1ac145a5)
[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] [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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ownership-f713e0baa0f2cec1)
[INFO] running `Command { std: "docker" "inspect" "e9ee2868534a8fc053cf9eadaa1715475cafc8017213919690095a5a29dd80f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ee2868534a8fc053cf9eadaa1715475cafc8017213919690095a5a29dd80f4", kill_on_drop: false }`
[INFO] [stdout] e9ee2868534a8fc053cf9eadaa1715475cafc8017213919690095a5a29dd80f4