[INFO] cloning repository https://github.com/placefortea/teatree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/placefortea/teatree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplacefortea%2Fteatree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplacefortea%2Fteatree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a56755a428fe63ee753df67a7c71d8f668e17ec
[INFO] checking placefortea/teatree against master#2e5723137b2b88368d018b262a0a823a1423131b for pr-78935-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplacefortea%2Fteatree" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/placefortea/teatree on toolchain 2e5723137b2b88368d018b262a0a823a1423131b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/placefortea/teatree
[INFO] finished tweaking git repo https://github.com/placefortea/teatree
[INFO] tweaked toml for git repo https://github.com/placefortea/teatree written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/placefortea/teatree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68907549da4e693ceae5a779c1adfedff4a7e78ca1bffaf5f87eed0f518e4ed5
[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" "68907549da4e693ceae5a779c1adfedff4a7e78ca1bffaf5f87eed0f518e4ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68907549da4e693ceae5a779c1adfedff4a7e78ca1bffaf5f87eed0f518e4ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68907549da4e693ceae5a779c1adfedff4a7e78ca1bffaf5f87eed0f518e4ed5", kill_on_drop: false }`
[INFO] [stdout] 68907549da4e693ceae5a779c1adfedff4a7e78ca1bffaf5f87eed0f518e4ed5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2e5723137b2b88368d018b262a0a823a1423131b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e31813d543f44e4c99f96d7a2db73da0d14c8025803a1be15093ee10972dcf2
[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" "0e31813d543f44e4c99f96d7a2db73da0d14c8025803a1be15093ee10972dcf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling subtle v2.1.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking historian v4.0.3
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking hashbrown v0.2.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling bincode v1.1.3
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking tokio-sync v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling curve25519-dalek v1.1.3
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling derive_more v0.14.0
[INFO] [stderr]    Compiling actix_derive v0.4.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.7.3
[INFO] [stderr]     Checking actix-threadpool v0.1.0
[INFO] [stderr]     Checking actix-rt v0.2.2
[INFO] [stderr]     Checking trust-dns-resolver v0.11.0
[INFO] [stderr]     Checking actix v0.8.1
[INFO] [stderr]     Checking serde v1.0.90
[INFO] [stderr]     Checking hashbrown v0.3.0
[INFO] [stderr]     Checking serde_bytes v0.11.1
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]     Checking pagecache v0.17.0
[INFO] [stderr]     Checking jsonrpc-parse v0.1.2
[INFO] [stderr]     Checking sled v0.24.1
[INFO] [stderr]     Checking teatree v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `vec_drain_as_slice` has been stable since 1.46.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_drain_as_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `vec_drain_as_slice` has been stable since 1.46.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_drain_as_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 06s
[INFO] running `Command { std: "docker" "inspect" "0e31813d543f44e4c99f96d7a2db73da0d14c8025803a1be15093ee10972dcf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e31813d543f44e4c99f96d7a2db73da0d14c8025803a1be15093ee10972dcf2", kill_on_drop: false }`
[INFO] [stdout] 0e31813d543f44e4c99f96d7a2db73da0d14c8025803a1be15093ee10972dcf2