[INFO] fetching crate xxv 0.1.2...
[INFO] checking xxv-0.1.2 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate xxv 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate xxv 0.1.2 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xxv 0.1.2
[INFO] finished tweaking crates.io crate xxv 0.1.2
[INFO] tweaked toml for crates.io crate xxv 0.1.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate xxv 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rmp v0.8.9
[INFO] [stderr]   Downloaded serde v1.0.104
[INFO] [stderr]   Downloaded xi-unicode v0.2.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.5.1
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.0
[INFO] [stderr]   Downloaded ahash v0.2.18
[INFO] [stderr]   Downloaded const-random-macro v0.1.8
[INFO] [stderr]   Downloaded backtrace v0.3.44
[INFO] [stderr]   Downloaded memchr v2.3.2
[INFO] [stderr]   Downloaded stable_deref_trait v1.1.1
[INFO] [stderr]   Downloaded lock_api v0.3.3
[INFO] [stderr]   Downloaded parking_lot v0.10.0
[INFO] [stderr]   Downloaded bstr v0.2.11
[INFO] [stderr]   Downloaded enum-map-derive v0.4.3
[INFO] [stderr]   Downloaded enumset v0.4.5
[INFO] [stderr]   Downloaded ncurses v5.99.0
[INFO] [stderr]   Downloaded num-iter v0.1.40
[INFO] [stderr]   Downloaded chrono v0.4.10
[INFO] [stderr]   Downloaded enum-map v0.6.2
[INFO] [stderr]   Downloaded num-rational v0.2.3
[INFO] [stderr]   Downloaded owning_ref v0.4.0
[INFO] [stderr]   Downloaded rio v0.9.2
[INFO] [stderr]   Downloaded arc-swap v0.4.4
[INFO] [stderr]   Downloaded signal-hook v0.1.13
[INFO] [stderr]   Downloaded rmp-serde v0.13.7
[INFO] [stderr]   Downloaded serde_derive v1.0.104
[INFO] [stderr]   Downloaded const-random v0.1.8
[INFO] [stderr]   Downloaded array-macro v1.0.4
[INFO] [stderr]   Downloaded cursive v0.14.0
[INFO] [stderr]   Downloaded enumset_derive v0.4.4
[INFO] [stderr]   Downloaded smallvec v1.2.0
[INFO] [stderr]   Downloaded crossterm v0.14.2
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded parking_lot_core v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51024b5452830834dc3fcd7c9527b9a430bd4abd095c91c5f891960d2ab67e6b
[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" "51024b5452830834dc3fcd7c9527b9a430bd4abd095c91c5f891960d2ab67e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51024b5452830834dc3fcd7c9527b9a430bd4abd095c91c5f891960d2ab67e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51024b5452830834dc3fcd7c9527b9a430bd4abd095c91c5f891960d2ab67e6b", kill_on_drop: false }`
[INFO] [stdout] 51024b5452830834dc3fcd7c9527b9a430bd4abd095c91c5f891960d2ab67e6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 249733919c637ef5e5b4a9db39c4dfce075b2cd788c3060741b470d168b3684c
[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" "249733919c637ef5e5b4a9db39c4dfce075b2cd788c3060741b470d168b3684c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking array-macro v1.0.4
[INFO] [stderr]     Checking xi-unicode v0.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking rio v0.9.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling enum-map-derive v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking enum-map v0.6.2
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling enumset_derive v0.4.4
[INFO] [stderr]     Checking enumset v0.4.5
[INFO] [stderr]     Checking cursive v0.14.0
[INFO] [stderr]     Checking xxv v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.49s
[INFO] running `Command { std: "docker" "inspect" "249733919c637ef5e5b4a9db39c4dfce075b2cd788c3060741b470d168b3684c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "249733919c637ef5e5b4a9db39c4dfce075b2cd788c3060741b470d168b3684c", kill_on_drop: false }`
[INFO] [stdout] 249733919c637ef5e5b4a9db39c4dfce075b2cd788c3060741b470d168b3684c