[INFO] cloning repository https://github.com/SimonEverts/backer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SimonEverts/backer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonEverts%2Fbacker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonEverts%2Fbacker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 057964abc4031642b6e0dd905bf25aaacc8e0060
[INFO] checking SimonEverts/backer against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSimonEverts%2Fbacker" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SimonEverts/backer on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SimonEverts/backer
[INFO] finished tweaking git repo https://github.com/SimonEverts/backer
[INFO] tweaked toml for git repo https://github.com/SimonEverts/backer written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec0ef7ad43c91944f6d6c92efbe284208134a1175ad35a60946b1342a3dd329d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ec0ef7ad43c91944f6d6c92efbe284208134a1175ad35a60946b1342a3dd329d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec0ef7ad43c91944f6d6c92efbe284208134a1175ad35a60946b1342a3dd329d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0ef7ad43c91944f6d6c92efbe284208134a1175ad35a60946b1342a3dd329d", kill_on_drop: false }`
[INFO] [stdout] ec0ef7ad43c91944f6d6c92efbe284208134a1175ad35a60946b1342a3dd329d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9218d8eb450742e6236d32ba1fac3ae35cd5b2151c7e0a03369d06c51402012
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a9218d8eb450742e6236d32ba1fac3ae35cd5b2151c7e0a03369d06c51402012", kill_on_drop: false }`
[INFO] [stderr]     Checking data-encoding v2.3.1
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking backer-list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `last_modified`
[INFO] [stdout]   --> backer-list.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |             let last_modified = metadata.modified()?.duration_since(SystemTime::UNIX_EPOCH).expect("Failed getting modified date");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_modified`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_modified`
[INFO] [stdout]   --> backer-list.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |             let last_modified = metadata.modified()?.duration_since(SystemTime::UNIX_EPOCH).expect("Failed getting modified date");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_modified`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `md5_digest`
[INFO] [stdout]   --> backer-list.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn md5_digest(path: String) -> Result<Digest, std::io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `md5_digest`
[INFO] [stdout]   --> backer-list.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn md5_digest(path: String) -> Result<Digest, std::io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "a9218d8eb450742e6236d32ba1fac3ae35cd5b2151c7e0a03369d06c51402012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9218d8eb450742e6236d32ba1fac3ae35cd5b2151c7e0a03369d06c51402012", kill_on_drop: false }`
[INFO] [stdout] a9218d8eb450742e6236d32ba1fac3ae35cd5b2151c7e0a03369d06c51402012