[INFO] fetching crate ssa-reloop 0.2.1...
[INFO] building ssa-reloop-0.2.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate ssa-reloop 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ssa-reloop 0.2.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ssa-reloop 0.2.1
[INFO] finished tweaking crates.io crate ssa-reloop 0.2.1
[INFO] tweaked toml for crates.io crate ssa-reloop 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ssa-impls v0.2.1
[INFO] [stderr]   Downloaded relooper v0.1.0
[INFO] [stderr]   Downloaded arena-traits v0.2.1
[INFO] [stderr]   Downloaded cfg-traits v0.2.1
[INFO] [stderr]   Downloaded ssa-traits v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee6b2f2880b44c5851f6ef21b4844f1a18a022ef6e4a535fc90bc799446d541c
[INFO] running `Command { std: "docker" "start" "-a" "ee6b2f2880b44c5851f6ef21b4844f1a18a022ef6e4a535fc90bc799446d541c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee6b2f2880b44c5851f6ef21b4844f1a18a022ef6e4a535fc90bc799446d541c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee6b2f2880b44c5851f6ef21b4844f1a18a022ef6e4a535fc90bc799446d541c", kill_on_drop: false }`
[INFO] [stdout] ee6b2f2880b44c5851f6ef21b4844f1a18a022ef6e4a535fc90bc799446d541c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b855aa0745e197d02f4174d094112af5fc869d2e7d4146d5cbf8dff7d2fcb7a
[INFO] running `Command { std: "docker" "start" "-a" "2b855aa0745e197d02f4174d094112af5fc869d2e7d4146d5cbf8dff7d2fcb7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling arena-traits v0.2.1
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling cfg-traits v0.2.1
[INFO] [stderr]    Compiling ssa-traits v0.2.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling relooper v0.1.0
[INFO] [stderr]    Compiling ssa-impls v0.2.1
[INFO] [stderr]    Compiling ssa-reloop v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `arena_traits::Arena`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arena_traits::Arena;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.25s
[INFO] running `Command { std: "docker" "inspect" "2b855aa0745e197d02f4174d094112af5fc869d2e7d4146d5cbf8dff7d2fcb7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b855aa0745e197d02f4174d094112af5fc869d2e7d4146d5cbf8dff7d2fcb7a", kill_on_drop: false }`
[INFO] [stdout] 2b855aa0745e197d02f4174d094112af5fc869d2e7d4146d5cbf8dff7d2fcb7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85b1cec2429295113d529ce63fd1f2f5b2d891db1db0fae1d7f3aeb1183d02ac
[INFO] running `Command { std: "docker" "start" "-a" "85b1cec2429295113d529ce63fd1f2f5b2d891db1db0fae1d7f3aeb1183d02ac", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `arena_traits::Arena`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arena_traits::Arena;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ssa-reloop v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `arena_traits::Arena`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arena_traits::Arena;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "85b1cec2429295113d529ce63fd1f2f5b2d891db1db0fae1d7f3aeb1183d02ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b1cec2429295113d529ce63fd1f2f5b2d891db1db0fae1d7f3aeb1183d02ac", kill_on_drop: false }`
[INFO] [stdout] 85b1cec2429295113d529ce63fd1f2f5b2d891db1db0fae1d7f3aeb1183d02ac