[INFO] fetching crate Caching 0.2.5...
[INFO] checking Caching-0.2.5 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate Caching 0.2.5 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate Caching 0.2.5 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate Caching 0.2.5
[INFO] finished tweaking crates.io crate Caching 0.2.5
[INFO] tweaked toml for crates.io crate Caching 0.2.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3195f92fb2bee3a1c86e9a9ab4268acb42fc504ceebcfb14341ed9dad902446d
[INFO] running `Command { std: "docker" "start" "-a" "3195f92fb2bee3a1c86e9a9ab4268acb42fc504ceebcfb14341ed9dad902446d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3195f92fb2bee3a1c86e9a9ab4268acb42fc504ceebcfb14341ed9dad902446d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3195f92fb2bee3a1c86e9a9ab4268acb42fc504ceebcfb14341ed9dad902446d", kill_on_drop: false }`
[INFO] [stdout] 3195f92fb2bee3a1c86e9a9ab4268acb42fc504ceebcfb14341ed9dad902446d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c70c833c4419907cb40f1dcb1ac193e6d1a18e6cebe0bc07ac841fee788ecb79
[INFO] running `Command { std: "docker" "start" "-a" "c70c833c4419907cb40f1dcb1ac193e6d1a18e6cebe0bc07ac841fee788ecb79", kill_on_drop: false }`
[INFO] [stderr]     Checking Caching v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:177:49
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let mut cache = Cache::<i32, i32>::new(|a| -> bool { true });
[INFO] [stdout]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "c70c833c4419907cb40f1dcb1ac193e6d1a18e6cebe0bc07ac841fee788ecb79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c70c833c4419907cb40f1dcb1ac193e6d1a18e6cebe0bc07ac841fee788ecb79", kill_on_drop: false }`
[INFO] [stdout] c70c833c4419907cb40f1dcb1ac193e6d1a18e6cebe0bc07ac841fee788ecb79
[INFO] checking Caching-0.2.5 against try#57fe1b734d9ff1c8a92bda60b85506b9648158d3 for pr-123752
[INFO] extracting crate Caching 0.2.5 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate Caching 0.2.5 on toolchain 57fe1b734d9ff1c8a92bda60b85506b9648158d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate Caching 0.2.5
[INFO] finished tweaking crates.io crate Caching 0.2.5
[INFO] tweaked toml for crates.io crate Caching 0.2.5 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39a1f689a786f181723dba1b8fb7af5e5f9a766410c97f7dc64c63c47373b0bd
[INFO] running `Command { std: "docker" "start" "-a" "39a1f689a786f181723dba1b8fb7af5e5f9a766410c97f7dc64c63c47373b0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39a1f689a786f181723dba1b8fb7af5e5f9a766410c97f7dc64c63c47373b0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39a1f689a786f181723dba1b8fb7af5e5f9a766410c97f7dc64c63c47373b0bd", kill_on_drop: false }`
[INFO] [stdout] 39a1f689a786f181723dba1b8fb7af5e5f9a766410c97f7dc64c63c47373b0bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 929ca3b9dbe1d8c9b5e29d360d2b8768c430e97cf6e6b7594a7c46ac9e7faa76
[INFO] running `Command { std: "docker" "start" "-a" "929ca3b9dbe1d8c9b5e29d360d2b8768c430e97cf6e6b7594a7c46ac9e7faa76", kill_on_drop: false }`
[INFO] [stderr]     Checking Caching v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:177:49
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let mut cache = Cache::<i32, i32>::new(|a| -> bool { true });
[INFO] [stdout]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "929ca3b9dbe1d8c9b5e29d360d2b8768c430e97cf6e6b7594a7c46ac9e7faa76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "929ca3b9dbe1d8c9b5e29d360d2b8768c430e97cf6e6b7594a7c46ac9e7faa76", kill_on_drop: false }`
[INFO] [stdout] 929ca3b9dbe1d8c9b5e29d360d2b8768c430e97cf6e6b7594a7c46ac9e7faa76
