[INFO] fetching crate mmap_json_file 0.1.5...
[INFO] checking mmap_json_file-0.1.5 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate mmap_json_file 0.1.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate mmap_json_file 0.1.5 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mmap_json_file 0.1.5
[INFO] finished tweaking crates.io crate mmap_json_file 0.1.5
[INFO] tweaked toml for crates.io crate mmap_json_file 0.1.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 33729398afacc356092c090c5329f34c6af5deb9cdc818c67da71f09c7a1581e
[INFO] running `Command { std: "docker" "start" "-a" "33729398afacc356092c090c5329f34c6af5deb9cdc818c67da71f09c7a1581e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33729398afacc356092c090c5329f34c6af5deb9cdc818c67da71f09c7a1581e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33729398afacc356092c090c5329f34c6af5deb9cdc818c67da71f09c7a1581e", kill_on_drop: false }`
[INFO] [stdout] 33729398afacc356092c090c5329f34c6af5deb9cdc818c67da71f09c7a1581e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a990418d21780dd77287983de3bed81dd2d20beaa9bccc13072faf1a16136ae
[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" "9a990418d21780dd77287983de3bed81dd2d20beaa9bccc13072faf1a16136ae", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   standback v0.2.17 (as host dependency): std
[INFO] [stderr]   syn v1.0.75 (as host dependency): full
[INFO] [stderr] 
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking mmap_json_file v0.1.5 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/lib.rs (2 fixes)
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:419:15
[INFO] [stdout]     |
[INFO] [stdout] 419 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:419:15
[INFO] [stdout]     |
[INFO] [stdout] 419 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating tests/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed tests/main.rs (1 fix)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.84s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking time v0.2.27
[INFO] [stderr]     Checking serde v1.0.128
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking mmap_json_file v0.1.5 (/tmp/fixit)
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:419:15
[INFO] [stdout]     |
[INFO] [stdout] 419 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/lib.rs:419:15
[INFO] [stdout]     |
[INFO] [stdout] 419 |         while let record = receiver.recv() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.17s
[INFO] running `Command { std: "docker" "inspect" "9a990418d21780dd77287983de3bed81dd2d20beaa9bccc13072faf1a16136ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a990418d21780dd77287983de3bed81dd2d20beaa9bccc13072faf1a16136ae", kill_on_drop: false }`
[INFO] [stdout] 9a990418d21780dd77287983de3bed81dd2d20beaa9bccc13072faf1a16136ae