[INFO] cloning repository https://github.com/rust-cc/rc_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-cc/rc_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cc%2Frc_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cc%2Frc_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9132cc0bfdd805272a556434cb545815dfe4e6b4
[INFO] building rust-cc/rc_demo 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%2Frust-cc%2Frc_demo" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-cc/rc_demo 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/rust-cc/rc_demo
[INFO] finished tweaking git repo https://github.com/rust-cc/rc_demo
[INFO] tweaked toml for git repo https://github.com/rust-cc/rc_demo written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-cc/rc_demo 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c2-chacha v0.2.3
[INFO] [stderr]   Downloaded rand_chacha v0.2.1
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded wasi v0.7.0
[INFO] [stderr]   Downloaded rand v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d9669b04f726cbcaae6c0b229eae0998f2d5645febb9f4f76a030a7d422a1b58
[INFO] running `Command { std: "docker" "start" "-a" "d9669b04f726cbcaae6c0b229eae0998f2d5645febb9f4f76a030a7d422a1b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9669b04f726cbcaae6c0b229eae0998f2d5645febb9f4f76a030a7d422a1b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9669b04f726cbcaae6c0b229eae0998f2d5645febb9f4f76a030a7d422a1b58", kill_on_drop: false }`
[INFO] [stdout] d9669b04f726cbcaae6c0b229eae0998f2d5645febb9f4f76a030a7d422a1b58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d66e64b549e42ff421dfd0114a3aa5dc35733fbd629696a0c4c306a85daddad4
[INFO] running `Command { std: "docker" "start" "-a" "d66e64b549e42ff421dfd0114a3aa5dc35733fbd629696a0c4c306a85daddad4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling ecc_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `add_inverse` is never used
[INFO] [stdout]    --> src/curve.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub trait Inverse {
[INFO] [stdout]     |           ------- method in this trait
[INFO] [stdout] 101 |     fn add_inverse(&self) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.83s
[INFO] running `Command { std: "docker" "inspect" "d66e64b549e42ff421dfd0114a3aa5dc35733fbd629696a0c4c306a85daddad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d66e64b549e42ff421dfd0114a3aa5dc35733fbd629696a0c4c306a85daddad4", kill_on_drop: false }`
[INFO] [stdout] d66e64b549e42ff421dfd0114a3aa5dc35733fbd629696a0c4c306a85daddad4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] cfbebf711bb9fa2845fbee6225fa07a7b753b5877617cff0b7d1f25131d4be60
[INFO] running `Command { std: "docker" "start" "-a" "cfbebf711bb9fa2845fbee6225fa07a7b753b5877617cff0b7d1f25131d4be60", kill_on_drop: false }`
[INFO] [stderr]    Compiling ecc_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `add_inverse` is never used
[INFO] [stdout]    --> src/curve.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub trait Inverse {
[INFO] [stdout]     |           ------- method in this trait
[INFO] [stdout] 101 |     fn add_inverse(&self) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "cfbebf711bb9fa2845fbee6225fa07a7b753b5877617cff0b7d1f25131d4be60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfbebf711bb9fa2845fbee6225fa07a7b753b5877617cff0b7d1f25131d4be60", kill_on_drop: false }`
[INFO] [stdout] cfbebf711bb9fa2845fbee6225fa07a7b753b5877617cff0b7d1f25131d4be60