[INFO] fetching crate index_key 0.5.0...
[INFO] checking index_key-0.5.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate index_key 0.5.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate index_key 0.5.0
[INFO] finished tweaking crates.io crate index_key 0.5.0
[INFO] tweaked toml for crates.io crate index_key 0.5.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate index_key 0.5.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ab276593819396ee4fe8d141b5fc834192fc3cee2d944a5ff6a8f968900f5e7
[INFO] running `Command { std: "docker" "start" "-a" "4ab276593819396ee4fe8d141b5fc834192fc3cee2d944a5ff6a8f968900f5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ab276593819396ee4fe8d141b5fc834192fc3cee2d944a5ff6a8f968900f5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ab276593819396ee4fe8d141b5fc834192fc3cee2d944a5ff6a8f968900f5e7", kill_on_drop: false }`
[INFO] [stdout] 4ab276593819396ee4fe8d141b5fc834192fc3cee2d944a5ff6a8f968900f5e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea8733ee931b453c74e7aaaa4eda4e6e3517436ba857e9af9681eb3a8a4cc6fd
[INFO] running `Command { std: "docker" "start" "-a" "ea8733ee931b453c74e7aaaa4eda4e6e3517436ba857e9af9681eb3a8a4cc6fd", kill_on_drop: false }`
[INFO] [stderr]     Checking index_key v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/lib.rs:324:51
[INFO] [stdout]     |
[INFO] [stdout] 324 |             for b1 in [0u16, 1, u16::max_value()].into_iter() {
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 324 -             for b1 in [0u16, 1, u16::max_value()].into_iter() {
[INFO] [stdout] 324 +             for b1 in [0u16, 1, u16::max_value()].iter() {
[INFO] [stdout]     |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 324 -             for b1 in [0u16, 1, u16::max_value()].into_iter() {
[INFO] [stdout] 324 +             for b1 in [0u16, 1, u16::max_value()] {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/lib.rs:325:55
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 for b2 in [0u16, 1, u16::max_value()].into_iter() {
[INFO] [stdout]     |                                                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 325 -                 for b2 in [0u16, 1, u16::max_value()].into_iter() {
[INFO] [stdout] 325 +                 for b2 in [0u16, 1, u16::max_value()].iter() {
[INFO] [stdout]     |
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 325 -                 for b2 in [0u16, 1, u16::max_value()].into_iter() {
[INFO] [stdout] 325 +                 for b2 in [0u16, 1, u16::max_value()] {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "ea8733ee931b453c74e7aaaa4eda4e6e3517436ba857e9af9681eb3a8a4cc6fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea8733ee931b453c74e7aaaa4eda4e6e3517436ba857e9af9681eb3a8a4cc6fd", kill_on_drop: false }`
[INFO] [stdout] ea8733ee931b453c74e7aaaa4eda4e6e3517436ba857e9af9681eb3a8a4cc6fd