[INFO] cloning repository https://github.com/el-komandante/mailgun-server-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/el-komandante/mailgun-server-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fel-komandante%2Fmailgun-server-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fel-komandante%2Fmailgun-server-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 085fbd56d7a1f0f5c114703fb5ffae7e17c3a2b0
[INFO] testing el-komandante/mailgun-server-rust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fel-komandante%2Fmailgun-server-rust" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/el-komandante/mailgun-server-rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/el-komandante/mailgun-server-rust
[INFO] finished tweaking git repo https://github.com/el-komandante/mailgun-server-rust
[INFO] tweaked toml for git repo https://github.com/el-komandante/mailgun-server-rust written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/el-komandante/mailgun-server-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df778861b1eb2aa72e37cdd7ddaca1623016f1e334bdc9100a6e362a32f651df
[INFO] running `Command { std: "docker" "start" "-a" "df778861b1eb2aa72e37cdd7ddaca1623016f1e334bdc9100a6e362a32f651df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df778861b1eb2aa72e37cdd7ddaca1623016f1e334bdc9100a6e362a32f651df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df778861b1eb2aa72e37cdd7ddaca1623016f1e334bdc9100a6e362a32f651df", kill_on_drop: false }`
[INFO] [stdout] df778861b1eb2aa72e37cdd7ddaca1623016f1e334bdc9100a6e362a32f651df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7984d7595f1169e583c7d0e201aab8dadace83766b34469873ac3b5a7ad96432
[INFO] running `Command { std: "docker" "start" "-a" "7984d7595f1169e583c7d0e201aab8dadace83766b34469873ac3b5a7ad96432", 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 v0.7.17`
[INFO] [stderr]     ... which satisfies dependency `openssl-sys = "^0.7.14"` (locked to 0.7.17) of package `openssl v0.7.14`
[INFO] [stderr]     ... which satisfies dependency `openssl = "^0.7.0"` (locked to 0.7.14) of package `cookie v0.2.5`
[INFO] [stderr]     ... which satisfies dependency `cookie = "^0.2"` (locked to 0.2.5) of package `hyper v0.7.2`
[INFO] [stderr]     ... which satisfies dependency `hyper = "~0.7"` (locked to 0.7.2) of package `mailgun-server v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] links to native library `openssl`
[INFO] [stderr] 
[INFO] [stderr] package `openssl-sys v0.9.6`
[INFO] [stderr]     ... which satisfies dependency `openssl-sys = "^0.9.6"` (locked to 0.9.6) of package `openssl v0.9.6`
[INFO] [stderr]     ... which satisfies dependency `openssl = "^0.9"` (locked to 0.9.6) of package `native-tls v0.1.1`
[INFO] [stderr]     ... which satisfies dependency `native-tls = "^0.1"` (locked to 0.1.1) of package `reqwest v0.3.0`
[INFO] [stderr]     ... which satisfies dependency `reqwest = "*"` (locked to 0.3.0) of package `mailgun-server v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `openssl`
[INFO] running `Command { std: "docker" "inspect" "7984d7595f1169e583c7d0e201aab8dadace83766b34469873ac3b5a7ad96432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7984d7595f1169e583c7d0e201aab8dadace83766b34469873ac3b5a7ad96432", kill_on_drop: false }`
[INFO] [stdout] 7984d7595f1169e583c7d0e201aab8dadace83766b34469873ac3b5a7ad96432