[INFO] fetching crate readenv 0.2.5...
[INFO] checking readenv-0.2.5 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate readenv 0.2.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate readenv 0.2.5 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate readenv 0.2.5
[INFO] finished tweaking crates.io crate readenv 0.2.5
[INFO] tweaked toml for crates.io crate readenv 0.2.5 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate readenv 0.2.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d253e56dc286ce8b2fe0b0fa653f068a24ba82ab6c7498bcf9e4bfa3ef378753
[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" "d253e56dc286ce8b2fe0b0fa653f068a24ba82ab6c7498bcf9e4bfa3ef378753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d253e56dc286ce8b2fe0b0fa653f068a24ba82ab6c7498bcf9e4bfa3ef378753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d253e56dc286ce8b2fe0b0fa653f068a24ba82ab6c7498bcf9e4bfa3ef378753", kill_on_drop: false }`
[INFO] [stdout] d253e56dc286ce8b2fe0b0fa653f068a24ba82ab6c7498bcf9e4bfa3ef378753
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5dca4e5aa813e60a2e7da3aeb420ab642cdc8a1a297519e57f546a3885f5bb5
[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" "a5dca4e5aa813e60a2e7da3aeb420ab642cdc8a1a297519e57f546a3885f5bb5", kill_on_drop: false }`
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking readenv v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `dotenv::from_filename_iter`: please use `from_path` in conjunction with `var` instead
[INFO] [stdout]   --> src/main.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let iter_result = dotenv::from_filename_iter(".env");
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `dotenv::from_filename_iter`: please use `from_path` in conjunction with `var` instead
[INFO] [stdout]   --> src/main.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let iter_result = dotenv::from_filename_iter(".env");
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "a5dca4e5aa813e60a2e7da3aeb420ab642cdc8a1a297519e57f546a3885f5bb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5dca4e5aa813e60a2e7da3aeb420ab642cdc8a1a297519e57f546a3885f5bb5", kill_on_drop: false }`
[INFO] [stdout] a5dca4e5aa813e60a2e7da3aeb420ab642cdc8a1a297519e57f546a3885f5bb5