[INFO] cloning repository https://github.com/autozimu/rust-mock-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/autozimu/rust-mock-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fautozimu%2Frust-mock-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fautozimu%2Frust-mock-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4a068b092bdaf3978aecbfcd7646c21b391ec50
[INFO] checking autozimu/rust-mock-sample against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fautozimu%2Frust-mock-sample" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/autozimu/rust-mock-sample on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/autozimu/rust-mock-sample
[INFO] finished tweaking git repo https://github.com/autozimu/rust-mock-sample
[INFO] tweaked toml for git repo https://github.com/autozimu/rust-mock-sample written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/autozimu/rust-mock-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v0.4.28
[INFO] [stderr]   Downloaded mocktopus_macros v0.7.0
[INFO] [stderr]   Downloaded mocktopus v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 217452ca028a56f543667dee4ae53a0c4d1af66bc8c0b5a22836748fdbffe917
[INFO] running `Command { std: "docker" "start" "-a" "217452ca028a56f543667dee4ae53a0c4d1af66bc8c0b5a22836748fdbffe917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "217452ca028a56f543667dee4ae53a0c4d1af66bc8c0b5a22836748fdbffe917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217452ca028a56f543667dee4ae53a0c4d1af66bc8c0b5a22836748fdbffe917", kill_on_drop: false }`
[INFO] [stdout] 217452ca028a56f543667dee4ae53a0c4d1af66bc8c0b5a22836748fdbffe917
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20bc68c5ddab93344299c47720c81387ec42485eb27a320d56b47971057fd8e4
[INFO] running `Command { std: "docker" "start" "-a" "20bc68c5ddab93344299c47720c81387ec42485eb27a320d56b47971057fd8e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hello_world`
[INFO] [stdout]   --> src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn hello_world(w: impl Watch) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling mocktopus_macros v0.7.0
[INFO] [stderr]     Checking mocktopus v0.7.0
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/main.rs:19:35
[INFO] [stdout]    |
[INFO] [stdout] 19 |           fn watch(&self) -> String {
[INFO] [stdout]    |  ___________________________________^
[INFO] [stdout] 20 | |             unreachable!()
[INFO] [stdout] 21 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.34s
[INFO] running `Command { std: "docker" "inspect" "20bc68c5ddab93344299c47720c81387ec42485eb27a320d56b47971057fd8e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20bc68c5ddab93344299c47720c81387ec42485eb27a320d56b47971057fd8e4", kill_on_drop: false }`
[INFO] [stdout] 20bc68c5ddab93344299c47720c81387ec42485eb27a320d56b47971057fd8e4