[INFO] fetching crate test-exec 0.1.0...
[INFO] checking test-exec-0.1.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate test-exec 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate test-exec 0.1.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate test-exec 0.1.0
[INFO] finished tweaking crates.io crate test-exec 0.1.0
[INFO] tweaked toml for crates.io crate test-exec 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2ae7fddbd83d34892d69f420d994e9f7f2588bebebda2ba3497488229332573
[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" "e2ae7fddbd83d34892d69f420d994e9f7f2588bebebda2ba3497488229332573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2ae7fddbd83d34892d69f420d994e9f7f2588bebebda2ba3497488229332573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2ae7fddbd83d34892d69f420d994e9f7f2588bebebda2ba3497488229332573", kill_on_drop: false }`
[INFO] [stdout] e2ae7fddbd83d34892d69f420d994e9f7f2588bebebda2ba3497488229332573
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86b1a8471d260c563a9367c08bf327b0277887dfbd20e57b9e994d6f9a27cdbb
[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" "86b1a8471d260c563a9367c08bf327b0277887dfbd20e57b9e994d6f9a27cdbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking test-exec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> tests/test.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | /     exec! {
[INFO] [stdout] 9  | |         "echo",
[INFO] [stdout] 10 | |         args: ["Hello world!"],
[INFO] [stdout] 11 | |         log: true,
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |         stderr: []
[INFO] [stdout] 15 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> tests/test.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | /     exec! {
[INFO] [stdout] 57 | |         path,
[INFO] [stdout] 58 | |         args: ["PATH"],
[INFO] [stdout] 59 | |         env: {
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |         stderr: []
[INFO] [stdout] 67 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> tests/test.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | /     exec! {
[INFO] [stdout] 85 | |         "sleep",
[INFO] [stdout] 86 | |         args: ["60"],
[INFO] [stdout] 87 | |         timeout: 3000,
[INFO] [stdout] ...  |
[INFO] [stdout] 92 | |         stderr: []
[INFO] [stdout] 93 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> tests/test.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 | /     exec! {
[INFO] [stdout] 126 | |         "sleep",
[INFO] [stdout] 127 | |         args: ["60"],
[INFO] [stdout] 128 | |         timeout: 1000,
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |         signal: 9 // SIGKILL = 9
[INFO] [stdout] 135 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.55s
[INFO] running `Command { std: "docker" "inspect" "86b1a8471d260c563a9367c08bf327b0277887dfbd20e57b9e994d6f9a27cdbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86b1a8471d260c563a9367c08bf327b0277887dfbd20e57b9e994d6f9a27cdbb", kill_on_drop: false }`
[INFO] [stdout] 86b1a8471d260c563a9367c08bf327b0277887dfbd20e57b9e994d6f9a27cdbb