[INFO] cloning repository https://github.com/jakubriha/ruvcs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakubriha/ruvcs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakubriha%2Fruvcs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakubriha%2Fruvcs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48a9099732359217b8ed72974d1eea9a043aad05
[INFO] building jakubriha/ruvcs 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%2Fjakubriha%2Fruvcs" "/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/jakubriha/ruvcs 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/jakubriha/ruvcs
[INFO] finished tweaking git repo https://github.com/jakubriha/ruvcs
[INFO] tweaked toml for git repo https://github.com/jakubriha/ruvcs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jakubriha/ruvcs 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] 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14d6e546f942306b556577985dc6f3083395502a8e5a5634708c4d01d7505532
[INFO] running `Command { std: "docker" "start" "-a" "14d6e546f942306b556577985dc6f3083395502a8e5a5634708c4d01d7505532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14d6e546f942306b556577985dc6f3083395502a8e5a5634708c4d01d7505532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14d6e546f942306b556577985dc6f3083395502a8e5a5634708c4d01d7505532", kill_on_drop: false }`
[INFO] [stdout] 14d6e546f942306b556577985dc6f3083395502a8e5a5634708c4d01d7505532
[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 -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] d26a8e040fbec69668bde5412b370c821bb39e07492c95e90ad0bbab7143996b
[INFO] running `Command { std: "docker" "start" "-a" "d26a8e040fbec69668bde5412b370c821bb39e07492c95e90ad0bbab7143996b", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cpufeatures v0.2.3
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling block-buffer v0.10.2
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2 v0.10.2
[INFO] [stderr]    Compiling ruvcs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/tree.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     path::{Path, PathBuf},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_from_content` is never used
[INFO] [stdout]   --> src/tree.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Key {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 49 |     fn generate_from_content(content: &[u8]) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ObjectRepository` is never used
[INFO] [stdout]   --> src/tree.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | trait ObjectRepository {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FileSystemObjectRepository` is never constructed
[INFO] [stdout]   --> src/tree.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct FileSystemObjectRepository {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/tree.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl FileSystemObjectRepository {
[INFO] [stdout]    | ------------------------------- associated function in this implementation
[INFO] [stdout] 65 |     pub fn new() -> io::Result<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.84s
[INFO] running `Command { std: "docker" "inspect" "d26a8e040fbec69668bde5412b370c821bb39e07492c95e90ad0bbab7143996b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d26a8e040fbec69668bde5412b370c821bb39e07492c95e90ad0bbab7143996b", kill_on_drop: false }`
[INFO] [stdout] d26a8e040fbec69668bde5412b370c821bb39e07492c95e90ad0bbab7143996b
[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 -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] d06a00c8ef5c7de974c6efd95229f490eb84be57cad8469094e56f09f50a78ec
[INFO] running `Command { std: "docker" "start" "-a" "d06a00c8ef5c7de974c6efd95229f490eb84be57cad8469094e56f09f50a78ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruvcs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/tree.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     path::{Path, PathBuf},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_from_content` is never used
[INFO] [stdout]   --> src/tree.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Key {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 49 |     fn generate_from_content(content: &[u8]) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ObjectRepository` is never used
[INFO] [stdout]   --> src/tree.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | trait ObjectRepository {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FileSystemObjectRepository` is never constructed
[INFO] [stdout]   --> src/tree.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct FileSystemObjectRepository {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/tree.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl FileSystemObjectRepository {
[INFO] [stdout]    | ------------------------------- associated function in this implementation
[INFO] [stdout] 65 |     pub fn new() -> io::Result<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "d06a00c8ef5c7de974c6efd95229f490eb84be57cad8469094e56f09f50a78ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d06a00c8ef5c7de974c6efd95229f490eb84be57cad8469094e56f09f50a78ec", kill_on_drop: false }`
[INFO] [stdout] d06a00c8ef5c7de974c6efd95229f490eb84be57cad8469094e56f09f50a78ec