[INFO] fetching crate buddy-system 0.2.0...
[INFO] testing buddy-system-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate buddy-system 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate buddy-system 0.2.0
[INFO] finished tweaking crates.io crate buddy-system 0.2.0
[INFO] tweaked toml for crates.io crate buddy-system 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate buddy-system 0.2.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd74c438282dda6494d6e7845d4a90177c7979eb48dc321cf18229795c834eac
[INFO] running `Command { std: "docker" "start" "-a" "cd74c438282dda6494d6e7845d4a90177c7979eb48dc321cf18229795c834eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd74c438282dda6494d6e7845d4a90177c7979eb48dc321cf18229795c834eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd74c438282dda6494d6e7845d4a90177c7979eb48dc321cf18229795c834eac", kill_on_drop: false }`
[INFO] [stdout] cd74c438282dda6494d6e7845d4a90177c7979eb48dc321cf18229795c834eac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8560757975ee3d10b7e53f3b0537ab7cd2b8bb919828c3994272c5b84d9fa74
[INFO] running `Command { std: "docker" "start" "-a" "d8560757975ee3d10b7e53f3b0537ab7cd2b8bb919828c3994272c5b84d9fa74", kill_on_drop: false }`
[INFO] [stderr]    Compiling generational-arena v0.2.9
[INFO] [stderr]    Compiling buddy-system v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `pretty_print::prettify`
[INFO] [stdout]  --> src/arena.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pretty_print::prettify,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "d8560757975ee3d10b7e53f3b0537ab7cd2b8bb919828c3994272c5b84d9fa74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8560757975ee3d10b7e53f3b0537ab7cd2b8bb919828c3994272c5b84d9fa74", kill_on_drop: false }`
[INFO] [stdout] d8560757975ee3d10b7e53f3b0537ab7cd2b8bb919828c3994272c5b84d9fa74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb0655ffc5349eda16d84e45b880e2d288491c687515e8a0aa1c5398959454fc
[INFO] running `Command { std: "docker" "start" "-a" "cb0655ffc5349eda16d84e45b880e2d288491c687515e8a0aa1c5398959454fc", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `pretty_print::prettify`
[INFO] [stdout]  --> src/arena.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pretty_print::prettify,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling buddy-system v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> src/arena.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 |     let a1 = arena.alloc(64).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]    --> src/arena.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |     let a2 = arena.alloc(24).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]    --> src/arena.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |     let a3 = arena.alloc(2).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a4`
[INFO] [stdout]    --> src/arena.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |     let a4 = arena.alloc(7).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a5`
[INFO] [stdout]    --> src/arena.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     let a5 = arena.alloc(31).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a6`
[INFO] [stdout]    --> src/arena.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 |     let a6 = arena.alloc(60).unwrap();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "cb0655ffc5349eda16d84e45b880e2d288491c687515e8a0aa1c5398959454fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb0655ffc5349eda16d84e45b880e2d288491c687515e8a0aa1c5398959454fc", kill_on_drop: false }`
[INFO] [stdout] cb0655ffc5349eda16d84e45b880e2d288491c687515e8a0aa1c5398959454fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6bf23756fa344b8202cb047ad35c03bbbff66071401e1305c276de5f2b7c7992
[INFO] running `Command { std: "docker" "start" "-a" "6bf23756fa344b8202cb047ad35c03bbbff66071401e1305c276de5f2b7c7992", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `pretty_print::prettify`
[INFO] [stderr]  --> src/arena.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pretty_print::prettify,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `buddy-system` (lib) generated 1 warning (run `cargo fix --lib -p buddy-system` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `a1`
[INFO] [stderr]    --> src/arena.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |     let a1 = arena.alloc(64).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a2`
[INFO] [stderr]    --> src/arena.rs:174:9
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let a2 = arena.alloc(24).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a3`
[INFO] [stderr]    --> src/arena.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |     let a3 = arena.alloc(2).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a4`
[INFO] [stderr]    --> src/arena.rs:176:9
[INFO] [stderr]     |
[INFO] [stderr] 176 |     let a4 = arena.alloc(7).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a5`
[INFO] [stderr]    --> src/arena.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     let a5 = arena.alloc(31).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a6`
[INFO] [stderr]    --> src/arena.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 178 |     let a6 = arena.alloc(60).unwrap();
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_a6`
[INFO] [stderr] 
[INFO] [stderr] warning: `buddy-system` (lib test) generated 6 warnings (run `cargo fix --lib -p buddy-system --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/buddy_system-ca0d1e9858b3aef0)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test arena::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests buddy_system
[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" "6bf23756fa344b8202cb047ad35c03bbbff66071401e1305c276de5f2b7c7992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bf23756fa344b8202cb047ad35c03bbbff66071401e1305c276de5f2b7c7992", kill_on_drop: false }`
[INFO] [stdout] 6bf23756fa344b8202cb047ad35c03bbbff66071401e1305c276de5f2b7c7992
