[INFO] fetching crate hidefix 0.1.1...
[INFO] checking hidefix-0.1.1 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate hidefix 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate hidefix 0.1.1 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hidefix 0.1.1
[INFO] finished tweaking crates.io crate hidefix 0.1.1
[INFO] tweaked toml for crates.io crate hidefix 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate hidefix 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hdf5-sys v0.7.0
[INFO] [stderr]   Downloaded byte-slice-cast v0.3.5
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d07c81386edcb329ba7400491783850949d5874f1fa4df9670cbca518fe23376
[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" "d07c81386edcb329ba7400491783850949d5874f1fa4df9670cbca518fe23376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d07c81386edcb329ba7400491783850949d5874f1fa4df9670cbca518fe23376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d07c81386edcb329ba7400491783850949d5874f1fa4df9670cbca518fe23376", kill_on_drop: false }`
[INFO] [stdout] d07c81386edcb329ba7400491783850949d5874f1fa4df9670cbca518fe23376
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfb9cd6b06b2c2a613c3de56587bce0de3aa5c278bf286376818b075a8ef987c
[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" "cfb9cd6b06b2c2a613c3de56587bce0de3aa5c278bf286376818b075a8ef987c", kill_on_drop: false }`
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[INFO] [stderr]     Checking flexbuffers v0.1.1
[INFO] [stderr]     Checking hidefix v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/idx/serde.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 |         v.as_slice().serialize(s)
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `as_slice(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(array_methods)]` to the crate attributes to enable `array::<impl [T; N]>::as_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/idx/serde.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 |         v.as_slice().serialize(s)
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `as_slice(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(array_methods)]` to the crate attributes to enable `array::<impl [T; N]>::as_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> benches/serialize.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |             let b = test::black_box(std::fs::read("/tmp/coads.idx.fx").unwrap());
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> benches/serialize.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |             let b = test::black_box(std::fs::read("/tmp/meps.idx.fx").unwrap());
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 37s
[INFO] running `Command { std: "docker" "inspect" "cfb9cd6b06b2c2a613c3de56587bce0de3aa5c278bf286376818b075a8ef987c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfb9cd6b06b2c2a613c3de56587bce0de3aa5c278bf286376818b075a8ef987c", kill_on_drop: false }`
[INFO] [stdout] cfb9cd6b06b2c2a613c3de56587bce0de3aa5c278bf286376818b075a8ef987c
