[INFO] fetching crate scavenger 1.7.6...
[INFO] checking scavenger-1.7.6 against beta for pr-78714
[INFO] extracting crate scavenger 1.7.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate scavenger 1.7.6 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scavenger 1.7.6
[INFO] finished tweaking crates.io crate scavenger 1.7.6
[INFO] tweaked toml for crates.io crate scavenger 1.7.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fccf21e5fca5c83d921edc39adcbed64030296222938fb016da954c290ba4c09
[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" "fccf21e5fca5c83d921edc39adcbed64030296222938fb016da954c290ba4c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fccf21e5fca5c83d921edc39adcbed64030296222938fb016da954c290ba4c09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fccf21e5fca5c83d921edc39adcbed64030296222938fb016da954c290ba4c09", kill_on_drop: false }`
[INFO] [stdout] fccf21e5fca5c83d921edc39adcbed64030296222938fb016da954c290ba4c09
[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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f715a231100f8a636d1a5bb1a8000ab09bd562e4fc891bb790b3e1a8b02d996
[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" "4f715a231100f8a636d1a5bb1a8000ab09bd562e4fc891bb790b3e1a8b02d996", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]    Compiling scavenger v1.7.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking ring v0.16.15
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking aligned_alloc v0.1.3
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking clap v2.30.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
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[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking pbr v1.0.3
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]     Checking ct-logs v0.6.0
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking tokio-rustls v0.10.3
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking hyper-rustls v0.17.1
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cpu_worker.rs:67:34
[INFO] [stdout]    |
[INFO] [stdout] 67 |     tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[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/cpu_worker.rs:86:34
[INFO] [stdout]    |
[INFO] [stdout] 86 |     tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/miner.rs:305:51
[INFO] [stdout]     |
[INFO] [stdout] 305 |                 .send(Box::new(cpu_buffer) as Box<Buffer + Send>)
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plot.rs:97:90
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(path: &PathBuf, mut use_direct_io: bool, dummy: bool) -> Result<Plot, Box<Error>> {
[INFO] [stdout]    |                                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub buffer: Box<Buffer + Send>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:35:36
[INFO] [stdout]    |
[INFO] [stdout] 35 |     rx_empty_buffers: Receiver<Box<Buffer + Send>>,
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 |     tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:49:40
[INFO] [stdout]    |
[INFO] [stdout] 49 |         rx_empty_buffers: Receiver<Box<Buffer + Send>>,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 |         tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cpu_worker.rs:67:34
[INFO] [stdout]    |
[INFO] [stdout] 67 |     tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[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/cpu_worker.rs:86:34
[INFO] [stdout]    |
[INFO] [stdout] 86 |     tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/miner.rs:305:51
[INFO] [stdout]     |
[INFO] [stdout] 305 |                 .send(Box::new(cpu_buffer) as Box<Buffer + Send>)
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plot.rs:97:90
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(path: &PathBuf, mut use_direct_io: bool, dummy: bool) -> Result<Plot, Box<Error>> {
[INFO] [stdout]    |                                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub buffer: Box<Buffer + Send>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:35:36
[INFO] [stdout]    |
[INFO] [stdout] 35 |     rx_empty_buffers: Receiver<Box<Buffer + Send>>,
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:36:34
[INFO] [stdout]    |
[INFO] [stdout] 36 |     tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:49:40
[INFO] [stdout]    |
[INFO] [stdout] 49 |         rx_empty_buffers: Receiver<Box<Buffer + Send>>,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 |         tx_empty_buffers: Sender<Box<Buffer + Send>>,
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ help: use `dyn`: `dyn Buffer + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.35s
[INFO] running `Command { std: "docker" "inspect" "4f715a231100f8a636d1a5bb1a8000ab09bd562e4fc891bb790b3e1a8b02d996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f715a231100f8a636d1a5bb1a8000ab09bd562e4fc891bb790b3e1a8b02d996", kill_on_drop: false }`
[INFO] [stdout] 4f715a231100f8a636d1a5bb1a8000ab09bd562e4fc891bb790b3e1a8b02d996