[INFO] cloning repository https://github.com/blt/mmap_comm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blt/mmap_comm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblt%2Fmmap_comm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblt%2Fmmap_comm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d0a505789d7e9ba8da6d04b2bf3f1b7e4617e897
[INFO] checking blt/mmap_comm against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblt%2Fmmap_comm" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blt/mmap_comm on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blt/mmap_comm
[INFO] finished tweaking git repo https://github.com/blt/mmap_comm
[INFO] tweaked toml for git repo https://github.com/blt/mmap_comm written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/blt/mmap_comm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d771006683b112476c18af8db1db08bf3a6d29ea64ea93e8700c624602794e5
[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" "8d771006683b112476c18af8db1db08bf3a6d29ea64ea93e8700c624602794e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d771006683b112476c18af8db1db08bf3a6d29ea64ea93e8700c624602794e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d771006683b112476c18af8db1db08bf3a6d29ea64ea93e8700c624602794e5", kill_on_drop: false }`
[INFO] [stdout] 8d771006683b112476c18af8db1db08bf3a6d29ea64ea93e8700c624602794e5
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8bc633fd3acf906dd408db5f3dc7588f77bfcdc77e680f72d72bef73dcdf92d
[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" "f8bc633fd3acf906dd408db5f3dc7588f77bfcdc77e680f72d72bef73dcdf92d", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v0.6.0
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking quantiles v0.7.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking clap v2.29.1
[INFO] [stderr]     Checking parking_lot_core v0.2.10
[INFO] [stderr]     Checking parking_lot v0.5.3
[INFO] [stderr]     Checking mmap_comm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `time` is imported redundantly
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{fs, mem, panic, sync, thread, time};
[INFO] [stdout]    |                                         ---- the item `time` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 28 |     use std::time;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             total_written += (*control).unflushed_writes;;
[INFO] [stdout]     |                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / lazy_static! {
[INFO] [stdout] 22 | |     static ref VALUES_TO_READ: sync::Arc<AtomicUsize> = sync::Arc::new(AtomicUsize::new(0));
[INFO] [stdout] 23 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[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: the item `time` is imported redundantly
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{fs, mem, panic, sync, thread, time};
[INFO] [stdout]    |                                         ---- the item `time` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 28 |     use std::time;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             total_written += (*control).unflushed_writes;;
[INFO] [stdout]     |                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / lazy_static! {
[INFO] [stdout] 22 | |     static ref VALUES_TO_READ: sync::Arc<AtomicUsize> = sync::Arc::new(AtomicUsize::new(0));
[INFO] [stdout] 23 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.85s
[INFO] running `Command { std: "docker" "inspect" "f8bc633fd3acf906dd408db5f3dc7588f77bfcdc77e680f72d72bef73dcdf92d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8bc633fd3acf906dd408db5f3dc7588f77bfcdc77e680f72d72bef73dcdf92d", kill_on_drop: false }`
[INFO] [stdout] f8bc633fd3acf906dd408db5f3dc7588f77bfcdc77e680f72d72bef73dcdf92d