[INFO] cloning repository https://github.com/Sam-Bowden/Project-Delta
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sam-Bowden/Project-Delta" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSam-Bowden%2FProject-Delta", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSam-Bowden%2FProject-Delta'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6dae0e793a7fee99572efe481fc4d37b18a98210
[INFO] testing Sam-Bowden/Project-Delta against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSam-Bowden%2FProject-Delta" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sam-Bowden/Project-Delta on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sam-Bowden/Project-Delta
[INFO] finished tweaking git repo https://github.com/Sam-Bowden/Project-Delta
[INFO] tweaked toml for git repo https://github.com/Sam-Bowden/Project-Delta written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Sam-Bowden/Project-Delta already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minidom v0.13.0
[INFO] [stderr]   Downloaded quick-xml v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be7f34ff1e5bd7b4d8ea3c791d0587ec3867dbf841f0c0e706b3cb8bcedd2cd3
[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" "be7f34ff1e5bd7b4d8ea3c791d0587ec3867dbf841f0c0e706b3cb8bcedd2cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be7f34ff1e5bd7b4d8ea3c791d0587ec3867dbf841f0c0e706b3cb8bcedd2cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7f34ff1e5bd7b4d8ea3c791d0587ec3867dbf841f0c0e706b3cb8bcedd2cd3", kill_on_drop: false }`
[INFO] [stdout] be7f34ff1e5bd7b4d8ea3c791d0587ec3867dbf841f0c0e706b3cb8bcedd2cd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9169af8304c63c9098928e951cedc5d2b0c367d67731ce0f7b2d42c0697a574
[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" "f9169af8304c63c9098928e951cedc5d2b0c367d67731ce0f7b2d42c0697a574", kill_on_drop: false }`
[INFO] [stderr]    Compiling quick-xml v0.20.0
[INFO] [stderr]    Compiling minidom v0.13.0
[INFO] [stderr]    Compiling gamma v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/core.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]    --> src/core.rs:193:41
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `levels`
[INFO] [stdout]    --> src/core.rs:193:55
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stdout]     |                                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_levels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.46s
[INFO] running `Command { std: "docker" "inspect" "f9169af8304c63c9098928e951cedc5d2b0c367d67731ce0f7b2d42c0697a574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9169af8304c63c9098928e951cedc5d2b0c367d67731ce0f7b2d42c0697a574", kill_on_drop: false }`
[INFO] [stdout] f9169af8304c63c9098928e951cedc5d2b0c367d67731ce0f7b2d42c0697a574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fd198cc52d141304835afd6a55ef94405b992337d210b4c37b9e3b840dcf868
[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" "5fd198cc52d141304835afd6a55ef94405b992337d210b4c37b9e3b840dcf868", kill_on_drop: false }`
[INFO] [stderr]    Compiling gamma v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/core.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]    --> src/core.rs:193:41
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `levels`
[INFO] [stdout]    --> src/core.rs:193:55
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stdout]     |                                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_levels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "5fd198cc52d141304835afd6a55ef94405b992337d210b4c37b9e3b840dcf868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd198cc52d141304835afd6a55ef94405b992337d210b4c37b9e3b840dcf868", kill_on_drop: false }`
[INFO] [stdout] 5fd198cc52d141304835afd6a55ef94405b992337d210b4c37b9e3b840dcf868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] f1503426cc478df79ec6ade66958c5f905145e11f2513d2340469db2c1c195c5
[INFO] running `Command { std: "docker" "start" "-a" "f1503426cc478df79ec6ade66958c5f905145e11f2513d2340469db2c1c195c5", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]    --> src/core.rs:193:21
[INFO] [stderr]     |
[INFO] [stderr] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `level`
[INFO] [stderr]    --> src/core.rs:193:41
[INFO] [stderr]     |
[INFO] [stderr] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stderr]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `levels`
[INFO] [stderr]    --> src/core.rs:193:55
[INFO] [stderr]     |
[INFO] [stderr] 193 | fn remove_from_tree(root: &mut Element, level: usize, levels: &Vec<Vec<&str>>) {
[INFO] [stderr]     |                                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_levels`
[INFO] [stderr] 
[INFO] [stderr] warning: `gamma` (bin "gamma" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gamma-9aaeab8b6572ae2e)
[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" "f1503426cc478df79ec6ade66958c5f905145e11f2513d2340469db2c1c195c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1503426cc478df79ec6ade66958c5f905145e11f2513d2340469db2c1c195c5", kill_on_drop: false }`
[INFO] [stdout] f1503426cc478df79ec6ade66958c5f905145e11f2513d2340469db2c1c195c5