[INFO] cloning repository https://github.com/jinkaitoo/hello_world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jinkaitoo/hello_world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjinkaitoo%2Fhello_world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjinkaitoo%2Fhello_world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a84d0c3c26b41c55ce2d1a9c4042b6a2d05c426a
[INFO] testing jinkaitoo/hello_world against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjinkaitoo%2Fhello_world" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jinkaitoo/hello_world on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jinkaitoo/hello_world
[INFO] finished tweaking git repo https://github.com/jinkaitoo/hello_world
[INFO] tweaked toml for git repo https://github.com/jinkaitoo/hello_world written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/jinkaitoo/hello_world already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", 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] 80f0507ffd20ee60737fa2637ee8692b2743b4ffaa705dc6f820a78758b4f299
[INFO] running `Command { std: "docker" "start" "-a" "80f0507ffd20ee60737fa2637ee8692b2743b4ffaa705dc6f820a78758b4f299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80f0507ffd20ee60737fa2637ee8692b2743b4ffaa705dc6f820a78758b4f299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80f0507ffd20ee60737fa2637ee8692b2743b4ffaa705dc6f820a78758b4f299", kill_on_drop: false }`
[INFO] [stdout] 80f0507ffd20ee60737fa2637ee8692b2743b4ffaa705dc6f820a78758b4f299
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b34c9c8f75d292da4fc56c5e1e49e7d62ed6efdf38580be7353258ec88a18db
[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" "4b34c9c8f75d292da4fc56c5e1e49e7d62ed6efdf38580be7353258ec88a18db", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]  --> src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut x: i32 = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y = 4;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4b34c9c8f75d292da4fc56c5e1e49e7d62ed6efdf38580be7353258ec88a18db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b34c9c8f75d292da4fc56c5e1e49e7d62ed6efdf38580be7353258ec88a18db", kill_on_drop: false }`
[INFO] [stdout] 4b34c9c8f75d292da4fc56c5e1e49e7d62ed6efdf38580be7353258ec88a18db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+62efba8a050c64249dab942951bb28f710208bc8" "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] 83c24318224a6901f434d1d4bf22f59171bed56d53e73a11f3c0a26dc51c5b0c
[INFO] running `Command { std: "docker" "start" "-a" "83c24318224a6901f434d1d4bf22f59171bed56d53e73a11f3c0a26dc51c5b0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]  --> src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut x: i32 = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y = 4;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "83c24318224a6901f434d1d4bf22f59171bed56d53e73a11f3c0a26dc51c5b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83c24318224a6901f434d1d4bf22f59171bed56d53e73a11f3c0a26dc51c5b0c", kill_on_drop: false }`
[INFO] [stdout] 83c24318224a6901f434d1d4bf22f59171bed56d53e73a11f3c0a26dc51c5b0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+62efba8a050c64249dab942951bb28f710208bc8" "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] c7e8f5e906f7e319ead09f60715fb4ce49b7367b0d744c6711505752d7d89d7e
[INFO] running `Command { std: "docker" "start" "-a" "c7e8f5e906f7e319ead09f60715fb4ce49b7367b0d744c6711505752d7d89d7e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:2:13
[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] 2 |     let mut x: i32 = 1;
[INFO] [stdout] 
[INFO] [stderr]   |             ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let y = 4;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_world` (bin "hello_world" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_world-2683109f6a7c2433)
[INFO] running `Command { std: "docker" "inspect" "c7e8f5e906f7e319ead09f60715fb4ce49b7367b0d744c6711505752d7d89d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e8f5e906f7e319ead09f60715fb4ce49b7367b0d744c6711505752d7d89d7e", kill_on_drop: false }`
[INFO] [stdout] c7e8f5e906f7e319ead09f60715fb4ce49b7367b0d744c6711505752d7d89d7e