[INFO] cloning repository https://github.com/sinsinpurin/rust_fake_installer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinsinpurin/rust_fake_installer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinsinpurin%2Frust_fake_installer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinsinpurin%2Frust_fake_installer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bec30cc3c2bf49b22d73628b513b1c32c9c22c23
[INFO] building sinsinpurin/rust_fake_installer against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinsinpurin%2Frust_fake_installer" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinsinpurin/rust_fake_installer 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 git repo https://github.com/sinsinpurin/rust_fake_installer
[INFO] finished tweaking git repo https://github.com/sinsinpurin/rust_fake_installer
[INFO] tweaked toml for git repo https://github.com/sinsinpurin/rust_fake_installer written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sinsinpurin/rust_fake_installer already has a lockfile, it will not be regenerated
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded number_prefix v0.3.0
[INFO] [stderr]   Downloaded indicatif v0.15.0
[INFO] [stderr]   Downloaded libc v0.2.92
[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] 02912543c610568710f69a1e2d8d825672c892efde1355ef0418d94e0597f05e
[INFO] running `Command { std: "docker" "start" "-a" "02912543c610568710f69a1e2d8d825672c892efde1355ef0418d94e0597f05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02912543c610568710f69a1e2d8d825672c892efde1355ef0418d94e0597f05e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02912543c610568710f69a1e2d8d825672c892efde1355ef0418d94e0597f05e", kill_on_drop: false }`
[INFO] [stdout] 02912543c610568710f69a1e2d8d825672c892efde1355ef0418d94e0597f05e
[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] 99ce445b02225d23813164942313def82ee8dcd7fc3a59d383c5ad290bc300cd
[INFO] running `Command { std: "docker" "start" "-a" "99ce445b02225d23813164942313def82ee8dcd7fc3a59d383c5ad290bc300cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling number_prefix v0.3.0
[INFO] [stderr]    Compiling terminal_size v0.1.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling indicatif v0.15.0
[INFO] [stderr]    Compiling fake_installer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 &self.run_installfile_mode();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 let _ = &self.run_installfile_mode();
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 &self.run_hacking_mode();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let _ = &self.run_hacking_mode();
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.73s
[INFO] running `Command { std: "docker" "inspect" "99ce445b02225d23813164942313def82ee8dcd7fc3a59d383c5ad290bc300cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99ce445b02225d23813164942313def82ee8dcd7fc3a59d383c5ad290bc300cd", kill_on_drop: false }`
[INFO] [stdout] 99ce445b02225d23813164942313def82ee8dcd7fc3a59d383c5ad290bc300cd
[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] eabe995f31d1968db1b4b4ab535629cc580a365aa0b2bab024c91fff8eabe451
[INFO] running `Command { std: "docker" "start" "-a" "eabe995f31d1968db1b4b4ab535629cc580a365aa0b2bab024c91fff8eabe451", kill_on_drop: false }`
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 &self.run_installfile_mode();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 let _ = &self.run_installfile_mode();
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 &self.run_hacking_mode();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let _ = &self.run_hacking_mode();
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fake_installer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 &self.run_installfile_mode();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 let _ = &self.run_installfile_mode();
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 &self.run_hacking_mode();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 let _ = &self.run_hacking_mode();
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "eabe995f31d1968db1b4b4ab535629cc580a365aa0b2bab024c91fff8eabe451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eabe995f31d1968db1b4b4ab535629cc580a365aa0b2bab024c91fff8eabe451", kill_on_drop: false }`
[INFO] [stdout] eabe995f31d1968db1b4b4ab535629cc580a365aa0b2bab024c91fff8eabe451