[INFO] cloning repository https://github.com/mtraina/rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtraina/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtraina%2Frust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtraina%2Frust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed4325280923327a012b599f66a8fd66154bd5e8
[INFO] testing mtraina/rust-by-example against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtraina%2Frust-by-example" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mtraina/rust-by-example on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mtraina/rust-by-example
[INFO] finished tweaking git repo https://github.com/mtraina/rust-by-example
[INFO] tweaked toml for git repo https://github.com/mtraina/rust-by-example written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mtraina/rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9993846d8f417386dbb7dee8d4dee1826f933074655fc64313f1145205a3829f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9993846d8f417386dbb7dee8d4dee1826f933074655fc64313f1145205a3829f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9993846d8f417386dbb7dee8d4dee1826f933074655fc64313f1145205a3829f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9993846d8f417386dbb7dee8d4dee1826f933074655fc64313f1145205a3829f", kill_on_drop: false }`
[INFO] [stdout] 9993846d8f417386dbb7dee8d4dee1826f933074655fc64313f1145205a3829f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] afb638c2351ba722002153770d829a9c28b85c93ca3699aad82e23ae331afa95
[INFO] running `Command { std: "docker" "start" "-a" "afb638c2351ba722002153770d829a9c28b85c93ca3699aad82e23ae331afa95", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "afb638c2351ba722002153770d829a9c28b85c93ca3699aad82e23ae331afa95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afb638c2351ba722002153770d829a9c28b85c93ca3699aad82e23ae331afa95", kill_on_drop: false }`
[INFO] [stdout] afb638c2351ba722002153770d829a9c28b85c93ca3699aad82e23ae331afa95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c789c11dd09a989d967d49a18dd0076cd7483c3a2c27d2e239b26203b4727547
[INFO] running `Command { std: "docker" "start" "-a" "c789c11dd09a989d967d49a18dd0076cd7483c3a2c27d2e239b26203b4727547", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Structure`
[INFO] [stdout]   --> examples/1_2_formatted_print.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     struct Structure(i32);
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 0.69s
[INFO] running `Command { std: "docker" "inspect" "c789c11dd09a989d967d49a18dd0076cd7483c3a2c27d2e239b26203b4727547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c789c11dd09a989d967d49a18dd0076cd7483c3a2c27d2e239b26203b4727547", kill_on_drop: false }`
[INFO] [stdout] c789c11dd09a989d967d49a18dd0076cd7483c3a2c27d2e239b26203b4727547
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 90c6dcca7e6279113e13f06231e40766caa0d9ac906ffedb2aae8294162559e4
[INFO] running `Command { std: "docker" "start" "-a" "90c6dcca7e6279113e13f06231e40766caa0d9ac906ffedb2aae8294162559e4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: struct is never constructed: `Structure`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> examples/1_2_formatted_print.rs:34:12
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 34 |     struct Structure(i32);
[INFO] [stdout] 
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_by_example` (example "1_2_formatted_print") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_by_example-ce7dbc3ed872e8a2)
[INFO] running `Command { std: "docker" "inspect" "90c6dcca7e6279113e13f06231e40766caa0d9ac906ffedb2aae8294162559e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c6dcca7e6279113e13f06231e40766caa0d9ac906ffedb2aae8294162559e4", kill_on_drop: false }`
[INFO] [stdout] 90c6dcca7e6279113e13f06231e40766caa0d9ac906ffedb2aae8294162559e4