[INFO] cloning repository https://github.com/omri123/use_map_reduce
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/omri123/use_map_reduce" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomri123%2Fuse_map_reduce", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomri123%2Fuse_map_reduce'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e97bb4187298c03c9587f41e407fa4da704e783
[INFO] checking omri123/use_map_reduce against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomri123%2Fuse_map_reduce" "/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/omri123/use_map_reduce on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/omri123/use_map_reduce
[INFO] finished tweaking git repo https://github.com/omri123/use_map_reduce
[INFO] tweaked toml for git repo https://github.com/omri123/use_map_reduce written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/omri123/use_map_reduce already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simplelog v0.5.3
[INFO] [stderr]   Downloaded map_reduce_omri v0.1.2
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2783e1fa5800f0b4ea7cd3acb52862b1c490eb6644da64ebafdf6c8a5d246f9c
[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" "2783e1fa5800f0b4ea7cd3acb52862b1c490eb6644da64ebafdf6c8a5d246f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2783e1fa5800f0b4ea7cd3acb52862b1c490eb6644da64ebafdf6c8a5d246f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2783e1fa5800f0b4ea7cd3acb52862b1c490eb6644da64ebafdf6c8a5d246f9c", kill_on_drop: false }`
[INFO] [stdout] 2783e1fa5800f0b4ea7cd3acb52862b1c490eb6644da64ebafdf6c8a5d246f9c
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 714535c8916d51af8307e65acb44c944c72e9af75f4120c0afb0b5b9a75b3a2b
[INFO] running `Command { std: "docker" "start" "-a" "714535c8916d51af8307e65acb44c944c72e9af75f4120c0afb0b5b9a75b3a2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stderr]     Checking map_reduce_omri v0.1.2
[INFO] [stderr]     Checking use_map_reduce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn visit_dirs(dir: &Path, cb: &mut FnMut(DirEntry)) -> io::Result<()> {
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(DirEntry)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:56:61
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn map_count_words(entry: PathBuf, _unused: i32, emit: &mut FnMut(String, i32)) {
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String, i32)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:93:58
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn reduce_count_words(k: String, v: Vec<i32>, emit: &mut FnMut(String, i32)){
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String, i32)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn visit_dirs(dir: &Path, cb: &mut FnMut(DirEntry)) -> io::Result<()> {
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(DirEntry)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:56:61
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn map_count_words(entry: PathBuf, _unused: i32, emit: &mut FnMut(String, i32)) {
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String, i32)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:93:58
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn reduce_count_words(k: String, v: Vec<i32>, emit: &mut FnMut(String, i32)){
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String, i32)`
[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 8.15s
[INFO] running `Command { std: "docker" "inspect" "714535c8916d51af8307e65acb44c944c72e9af75f4120c0afb0b5b9a75b3a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714535c8916d51af8307e65acb44c944c72e9af75f4120c0afb0b5b9a75b3a2b", kill_on_drop: false }`
[INFO] [stdout] 714535c8916d51af8307e65acb44c944c72e9af75f4120c0afb0b5b9a75b3a2b