[INFO] fetching crate contact-tracing 0.2.1...
[INFO] checking contact-tracing-0.2.1 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate contact-tracing 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate contact-tracing 0.2.1 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate contact-tracing 0.2.1
[INFO] finished tweaking crates.io crate contact-tracing 0.2.1
[INFO] tweaked toml for crates.io crate contact-tracing 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crypto-mac v0.7.0
[INFO] [stderr]   Downloaded block-buffer v0.7.3
[INFO] [stderr]   Downloaded hmac v0.7.1
[INFO] [stderr]   Downloaded derive_more v0.99.13
[INFO] [stderr]   Downloaded convert_case v0.4.0
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded num-integer v0.1.44
[INFO] [stderr]   Downloaded base64 v0.12.3
[INFO] [stderr]   Downloaded block-padding v0.1.5
[INFO] [stderr]   Downloaded bytes v0.5.6
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded byteorder v1.4.3
[INFO] [stderr]   Downloaded typenum v1.13.0
[INFO] [stderr]   Downloaded hkdf v0.8.0
[INFO] [stderr]   Downloaded num-traits v0.2.14
[INFO] [stderr]   Downloaded wasi v0.10.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded sha2 v0.8.2
[INFO] [stderr]   Downloaded rand_hc v0.2.0
[INFO] [stderr]   Downloaded opaque-debug v0.2.3
[INFO] [stderr]   Downloaded subtle v1.0.0
[INFO] [stderr]   Downloaded getrandom v0.1.16
[INFO] [stderr]   Downloaded byte-tools v0.3.1
[INFO] [stderr]   Downloaded generic-array v0.12.4
[INFO] [stderr]   Downloaded digest v0.8.1
[INFO] [stderr]   Downloaded chrono v0.4.19
[INFO] [stderr]   Downloaded time v0.1.44
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.10
[INFO] [stderr]   Downloaded rand_core v0.5.1
[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded fake-simd v0.1.2
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", 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] 33cac4b136ac2f11f08d37eeeea209c643de4d4cfe9576a7f9425e027e47a850
[INFO] running `Command { std: "docker" "start" "-a" "33cac4b136ac2f11f08d37eeeea209c643de4d4cfe9576a7f9425e027e47a850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33cac4b136ac2f11f08d37eeeea209c643de4d4cfe9576a7f9425e027e47a850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33cac4b136ac2f11f08d37eeeea209c643de4d4cfe9576a7f9425e027e47a850", kill_on_drop: false }`
[INFO] [stdout] 33cac4b136ac2f11f08d37eeeea209c643de4d4cfe9576a7f9425e027e47a850
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "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] 5706caf59de0bbd97b3f32b096a5bca66ff19016caedd01ea5c8a72ea837d3b7
[INFO] running `Command { std: "docker" "start" "-a" "5706caf59de0bbd97b3f32b096a5bca66ff19016caedd01ea5c8a72ea837d3b7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling derive_more v0.99.13
[INFO] [stderr]     Checking contact-tracing v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.83s
[INFO] running `Command { std: "docker" "inspect" "5706caf59de0bbd97b3f32b096a5bca66ff19016caedd01ea5c8a72ea837d3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5706caf59de0bbd97b3f32b096a5bca66ff19016caedd01ea5c8a72ea837d3b7", kill_on_drop: false }`
[INFO] [stdout] 5706caf59de0bbd97b3f32b096a5bca66ff19016caedd01ea5c8a72ea837d3b7