[INFO] cloning repository https://github.com/AmadiMichael/interior_mutability
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AmadiMichael/interior_mutability" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmadiMichael%2Finterior_mutability", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmadiMichael%2Finterior_mutability'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5342a35f33ed51fb0f0e35edd9bb19b3a0b46604
[INFO] building AmadiMichael/interior_mutability against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmadiMichael%2Finterior_mutability" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AmadiMichael/interior_mutability on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AmadiMichael/interior_mutability
[INFO] finished tweaking git repo https://github.com/AmadiMichael/interior_mutability
[INFO] tweaked toml for git repo https://github.com/AmadiMichael/interior_mutability written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AmadiMichael/interior_mutability 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f1cdb43d2ff06980b780fa28b15ad0a857147f51b2ae9db359a5bec7fcea9c4
[INFO] running `Command { std: "docker" "start" "-a" "8f1cdb43d2ff06980b780fa28b15ad0a857147f51b2ae9db359a5bec7fcea9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f1cdb43d2ff06980b780fa28b15ad0a857147f51b2ae9db359a5bec7fcea9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f1cdb43d2ff06980b780fa28b15ad0a857147f51b2ae9db359a5bec7fcea9c4", kill_on_drop: false }`
[INFO] [stdout] 8f1cdb43d2ff06980b780fa28b15ad0a857147f51b2ae9db359a5bec7fcea9c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 259c7eb2cb72433ff601f72a9091bd4491b223a9b5989de394cce991b5e64371
[INFO] running `Command { std: "docker" "start" "-a" "259c7eb2cb72433ff601f72a9091bd4491b223a9b5989de394cce991b5e64371", kill_on_drop: false }`
[INFO] [stderr]    Compiling internal_mutability v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/rc.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T> Rc<T> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 18 |     fn new(v: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/rc.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 52 -             drop(inner);
[INFO] [stdout] 52 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "259c7eb2cb72433ff601f72a9091bd4491b223a9b5989de394cce991b5e64371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "259c7eb2cb72433ff601f72a9091bd4491b223a9b5989de394cce991b5e64371", kill_on_drop: false }`
[INFO] [stdout] 259c7eb2cb72433ff601f72a9091bd4491b223a9b5989de394cce991b5e64371
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 659367e7c298a711229c1fd675d379781d75c05cdd3ae56dae82a5df23758d0c
[INFO] running `Command { std: "docker" "start" "-a" "659367e7c298a711229c1fd675d379781d75c05cdd3ae56dae82a5df23758d0c", kill_on_drop: false }`
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/rc.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T> Rc<T> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 18 |     fn new(v: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/rc.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 52 -             drop(inner);
[INFO] [stdout] 52 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling internal_mutability v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::Cell`
[INFO] [stdout]   --> src/cell.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use super::Cell;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/rc.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/rc.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T> Rc<T> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 18 |     fn new(v: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/rc.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 52 -             drop(inner);
[INFO] [stdout] 52 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "659367e7c298a711229c1fd675d379781d75c05cdd3ae56dae82a5df23758d0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659367e7c298a711229c1fd675d379781d75c05cdd3ae56dae82a5df23758d0c", kill_on_drop: false }`
[INFO] [stdout] 659367e7c298a711229c1fd675d379781d75c05cdd3ae56dae82a5df23758d0c
