[INFO] fetching crate slackbot 0.2.0...
[INFO] checking slackbot-0.2.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate slackbot 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate slackbot 0.2.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slackbot 0.2.0
[INFO] finished tweaking crates.io crate slackbot 0.2.0
[INFO] tweaked toml for crates.io crate slackbot 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded websocket v0.12.2
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded language-tags v0.0.7
[INFO] [stderr]   Downloaded serde v0.6.15
[INFO] [stderr]   Downloaded cookie v0.1.21
[INFO] [stderr]   Downloaded mime v0.1.3
[INFO] [stderr]   Downloaded uuid v0.1.18
[INFO] [stderr]   Downloaded serde_json v0.6.1
[INFO] [stderr]   Downloaded libc v0.1.12
[INFO] [stderr]   Downloaded url v0.2.38
[INFO] [stderr]   Downloaded openssl-sys v0.6.7
[INFO] [stderr]   Downloaded hyper v0.6.16
[INFO] [stderr]   Downloaded openssl v0.6.7
[INFO] [stderr]   Downloaded lazy_static v0.1.16
[INFO] [stderr]   Downloaded slack v0.8.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5081b1e4433432a09c528cc68726c36a542ff82660b579e28b860dd4428e2d8
[INFO] running `Command { std: "docker" "start" "-a" "e5081b1e4433432a09c528cc68726c36a542ff82660b579e28b860dd4428e2d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5081b1e4433432a09c528cc68726c36a542ff82660b579e28b860dd4428e2d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5081b1e4433432a09c528cc68726c36a542ff82660b579e28b860dd4428e2d8", kill_on_drop: false }`
[INFO] [stdout] e5081b1e4433432a09c528cc68726c36a542ff82660b579e28b860dd4428e2d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60bd6b4011fe47dafd6768d530a93700e3e5ff5a2e5ccc9ddd662287325b57ef
[INFO] running `Command { std: "docker" "start" "-a" "60bd6b4011fe47dafd6768d530a93700e3e5ff5a2e5ccc9ddd662287325b57ef", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: multiple packages link to native library `openssl`, but a native library can be linked only once
[INFO] [stderr] 
[INFO] [stderr] package `openssl-sys v0.6.7`
[INFO] [stderr]     ... which is depended on by `openssl v0.6.7`
[INFO] [stderr]     ... which is depended on by `cookie v0.1.21`
[INFO] [stderr]     ... which is depended on by `hyper v0.6.16`
[INFO] [stderr]     ... which is depended on by `slack v0.8.3`
[INFO] [stderr]     ... which is depended on by `slackbot v0.2.0 (/opt/rustwide/workdir)`
[INFO] [stderr] links to native library `openssl`
[INFO] [stderr] 
[INFO] [stderr] package `openssl-sys v0.9.66`
[INFO] [stderr]     ... which is depended on by `openssl v0.10.36`
[INFO] [stderr]     ... which is depended on by `websocket v0.12.2`
[INFO] [stderr]     ... which is depended on by `slack v0.8.3`
[INFO] [stderr]     ... which is depended on by `slackbot v0.2.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `openssl`
[INFO] running `Command { std: "docker" "inspect" "60bd6b4011fe47dafd6768d530a93700e3e5ff5a2e5ccc9ddd662287325b57ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60bd6b4011fe47dafd6768d530a93700e3e5ff5a2e5ccc9ddd662287325b57ef", kill_on_drop: false }`
[INFO] [stdout] 60bd6b4011fe47dafd6768d530a93700e3e5ff5a2e5ccc9ddd662287325b57ef