[INFO] fetching crate self-reference 0.2.2...
[INFO] building self-reference-0.2.2 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate self-reference 0.2.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate self-reference 0.2.2
[INFO] finished tweaking crates.io crate self-reference 0.2.2
[INFO] tweaked toml for crates.io crate self-reference 0.2.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate self-reference 0.2.2 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cc5af933a91b2f8f07e11927be4d82df18141fa3e905cdc04f0ab0567d7ef22
[INFO] running `Command { std: "docker" "start" "-a" "0cc5af933a91b2f8f07e11927be4d82df18141fa3e905cdc04f0ab0567d7ef22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc5af933a91b2f8f07e11927be4d82df18141fa3e905cdc04f0ab0567d7ef22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc5af933a91b2f8f07e11927be4d82df18141fa3e905cdc04f0ab0567d7ef22", kill_on_drop: false }`
[INFO] [stdout] 0cc5af933a91b2f8f07e11927be4d82df18141fa3e905cdc04f0ab0567d7ef22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8924a14f3e985a4a48ad61d138854bfef705788691a5cb496c791d3cbf876184
[INFO] running `Command { std: "docker" "start" "-a" "8924a14f3e985a4a48ad61d138854bfef705788691a5cb496c791d3cbf876184", kill_on_drop: false }`
[INFO] [stderr]    Compiling self-reference v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/utils.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     mem::forget(v);
[INFO] [stdout]    |     ^^^^^^^^^^^^-^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `&<R as refs::RefDef>::Type<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 29 -     mem::forget(v);
[INFO] [stdout] 29 +     let _ = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/utils.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     mem::forget(v);
[INFO] [stdout]    |     ^^^^^^^^^^^^-^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `&mut <R as refs::RefDef>::Type<'_>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 42 -     mem::forget(v);
[INFO] [stdout] 42 +     let _ = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "8924a14f3e985a4a48ad61d138854bfef705788691a5cb496c791d3cbf876184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8924a14f3e985a4a48ad61d138854bfef705788691a5cb496c791d3cbf876184", kill_on_drop: false }`
[INFO] [stdout] 8924a14f3e985a4a48ad61d138854bfef705788691a5cb496c791d3cbf876184
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcab8f64b44e57572f04a7cefaed2363cc074910397bb80872e44223c57df84e
[INFO] running `Command { std: "docker" "start" "-a" "fcab8f64b44e57572f04a7cefaed2363cc074910397bb80872e44223c57df84e", kill_on_drop: false }`
[INFO] [stderr]    Compiling self-reference v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/utils.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     mem::forget(v);
[INFO] [stdout]    |     ^^^^^^^^^^^^-^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `&<R as refs::RefDef>::Type<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 29 -     mem::forget(v);
[INFO] [stdout] 29 +     let _ = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/utils.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     mem::forget(v);
[INFO] [stdout]    |     ^^^^^^^^^^^^-^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `&mut <R as refs::RefDef>::Type<'_>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 42 -     mem::forget(v);
[INFO] [stdout] 42 +     let _ = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/utils.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     mem::forget(v);
[INFO] [stdout]    |     ^^^^^^^^^^^^-^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `&<R as refs::RefDef>::Type<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 29 -     mem::forget(v);
[INFO] [stdout] 29 +     let _ = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/utils.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     mem::forget(v);
[INFO] [stdout]    |     ^^^^^^^^^^^^-^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `&mut <R as refs::RefDef>::Type<'_>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 42 -     mem::forget(v);
[INFO] [stdout] 42 +     let _ = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "fcab8f64b44e57572f04a7cefaed2363cc074910397bb80872e44223c57df84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcab8f64b44e57572f04a7cefaed2363cc074910397bb80872e44223c57df84e", kill_on_drop: false }`
[INFO] [stdout] fcab8f64b44e57572f04a7cefaed2363cc074910397bb80872e44223c57df84e