[INFO] fetching crate buddy-system 0.2.0...
[INFO] checking buddy-system-0.2.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate buddy-system 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate buddy-system 0.2.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generational-arena v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 093157a5810865512ddf5b59a7f3c1b35d665d7d7d1145c150ba457445227ba7
[INFO] running `Command { std: "docker" "start" "-a" "093157a5810865512ddf5b59a7f3c1b35d665d7d7d1145c150ba457445227ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "093157a5810865512ddf5b59a7f3c1b35d665d7d7d1145c150ba457445227ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "093157a5810865512ddf5b59a7f3c1b35d665d7d7d1145c150ba457445227ba7", kill_on_drop: false }`
[INFO] [stdout] 093157a5810865512ddf5b59a7f3c1b35d665d7d7d1145c150ba457445227ba7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc825f03631b3fd9e3cafcf321822d689e4d059010b72581ca548d7184ef8ef8
[INFO] running `Command { std: "docker" "start" "-a" "dc825f03631b3fd9e3cafcf321822d689e4d059010b72581ca548d7184ef8ef8", kill_on_drop: false }`
[INFO] [stderr]     Checking generational-arena v0.2.9
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "dc825f03631b3fd9e3cafcf321822d689e4d059010b72581ca548d7184ef8ef8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc825f03631b3fd9e3cafcf321822d689e4d059010b72581ca548d7184ef8ef8", kill_on_drop: false }`
[INFO] [stdout] dc825f03631b3fd9e3cafcf321822d689e4d059010b72581ca548d7184ef8ef8
[INFO] checking buddy-system-0.2.0 against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] extracting crate buddy-system 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate buddy-system 0.2.0 on toolchain 09bc67b9158392361780e779d32997f14cc75c39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5546a2064a96ce217dc67f0e69a840697fbfaf8518dbcdf9af36fd127b505abf
[INFO] running `Command { std: "docker" "start" "-a" "5546a2064a96ce217dc67f0e69a840697fbfaf8518dbcdf9af36fd127b505abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5546a2064a96ce217dc67f0e69a840697fbfaf8518dbcdf9af36fd127b505abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5546a2064a96ce217dc67f0e69a840697fbfaf8518dbcdf9af36fd127b505abf", kill_on_drop: false }`
[INFO] [stdout] 5546a2064a96ce217dc67f0e69a840697fbfaf8518dbcdf9af36fd127b505abf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11fe51f555c944303e5c1af4798ee405e118e3dbde4d41b8e8549b0ff3dfe340
[INFO] running `Command { std: "docker" "start" "-a" "11fe51f555c944303e5c1af4798ee405e118e3dbde4d41b8e8549b0ff3dfe340", kill_on_drop: false }`
[INFO] [stderr]     Checking generational-arena v0.2.9
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` 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: 1 warning emitted
[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] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "11fe51f555c944303e5c1af4798ee405e118e3dbde4d41b8e8549b0ff3dfe340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11fe51f555c944303e5c1af4798ee405e118e3dbde4d41b8e8549b0ff3dfe340", kill_on_drop: false }`
[INFO] [stdout] 11fe51f555c944303e5c1af4798ee405e118e3dbde4d41b8e8549b0ff3dfe340
