[INFO] fetching crate slackbot 0.2.0...
[INFO] testing slackbot-0.2.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[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 ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] [stderr]   Downloaded libc v0.1.12
[INFO] [stderr]   Downloaded same-file v0.1.3
[INFO] [stderr]   Downloaded openssl-sys v0.6.7
[INFO] [stderr]   Downloaded openssl v0.6.7
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded typeable v0.1.2
[INFO] [stderr]   Downloaded serde_json v0.6.1
[INFO] [stderr]   Downloaded language-tags v0.0.7
[INFO] [stderr]   Downloaded cookie v0.1.21
[INFO] [stderr]   Downloaded mime v0.1.3
[INFO] [stderr]   Downloaded traitobject v0.0.1
[INFO] [stderr]   Downloaded walkdir v1.0.7
[INFO] [stderr]   Downloaded lazy_static v0.1.16
[INFO] [stderr]   Downloaded uuid v0.1.18
[INFO] [stderr]   Downloaded bitflags v0.3.3
[INFO] [stderr]   Downloaded gcc v0.3.55
[INFO] [stderr]   Downloaded url v0.2.38
[INFO] [stderr]   Downloaded serde v0.6.15
[INFO] [stderr]   Downloaded slack v0.8.3
[INFO] [stderr]   Downloaded pnacl-build-helper v1.4.11
[INFO] [stderr]   Downloaded libressl-pnacl-sys v2.1.6
[INFO] [stderr]   Downloaded hpack v0.2.0
[INFO] [stderr]   Downloaded hyper v0.6.16
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded solicit v0.4.4
[INFO] [stderr]   Downloaded unicase v1.4.2
[INFO] [stderr]   Downloaded websocket v0.12.2
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c0e6852ebd121b8bf3dd407dc6153c31af485009b29bd875d2467ba844262d0
[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" "0c0e6852ebd121b8bf3dd407dc6153c31af485009b29bd875d2467ba844262d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c0e6852ebd121b8bf3dd407dc6153c31af485009b29bd875d2467ba844262d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c0e6852ebd121b8bf3dd407dc6153c31af485009b29bd875d2467ba844262d0", kill_on_drop: false }`
[INFO] [stdout] 0c0e6852ebd121b8bf3dd407dc6153c31af485009b29bd875d2467ba844262d0
[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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--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] 4a995aa26cb6d87667eaab7f9da3c6f103097cd5a4c671cddeae3b94a836c5d5
[INFO] running `Command { std: "docker" "start" "-a" "4a995aa26cb6d87667eaab7f9da3c6f103097cd5a4c671cddeae3b94a836c5d5", kill_on_drop: false }`
[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 v0.9.65`
[INFO] [stderr]     ... which is depended on by `openssl v0.10.35`
[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" "4a995aa26cb6d87667eaab7f9da3c6f103097cd5a4c671cddeae3b94a836c5d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a995aa26cb6d87667eaab7f9da3c6f103097cd5a4c671cddeae3b94a836c5d5", kill_on_drop: false }`
[INFO] [stdout] 4a995aa26cb6d87667eaab7f9da3c6f103097cd5a4c671cddeae3b94a836c5d5