[INFO] fetching crate netns-exec 0.2.2...
[INFO] testing netns-exec-0.2.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate netns-exec 0.2.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate netns-exec 0.2.2
[INFO] finished tweaking crates.io crate netns-exec 0.2.2
[INFO] tweaked toml for crates.io crate netns-exec 0.2.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate netns-exec 0.2.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate netns-exec 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.18.0
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63b1b70e5feed92ab39f18397b48916a6d5900ee6b29e2a0509ffd78357fe3de
[INFO] running `Command { std: "docker" "start" "-a" "63b1b70e5feed92ab39f18397b48916a6d5900ee6b29e2a0509ffd78357fe3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63b1b70e5feed92ab39f18397b48916a6d5900ee6b29e2a0509ffd78357fe3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63b1b70e5feed92ab39f18397b48916a6d5900ee6b29e2a0509ffd78357fe3de", kill_on_drop: false }`
[INFO] [stdout] 63b1b70e5feed92ab39f18397b48916a6d5900ee6b29e2a0509ffd78357fe3de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 767018815a23e4f24c00cce529af53197a67ea22469379f6ec699b33730e3bb4
[INFO] running `Command { std: "docker" "start" "-a" "767018815a23e4f24c00cce529af53197a67ea22469379f6ec699b33730e3bb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling netns-exec v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 |    fn main() {
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 12 | |      let nsname = if env::args().len() > 2 {
[INFO] [stdout] 13 | |          env::args().nth(1).unwrap()
[INFO] [stdout] 14 | |      } else {
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |/     nix::unistd::execvp(&c_args.first().unwrap(), c_args.as_slice())
[INFO] [stdout] 45 | ||         .expect("something went wrong executing the given command, perhaps it couldn't be found?");
[INFO] [stdout]    | ||__________________________________________________________________________________________________- any code following this expression is unreachable
[INFO] [stdout] 46 | |  }
[INFO] [stdout]    | |__^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     nix::unistd::execvp(&c_args.first().unwrap(), c_args.as_slice())
[INFO] [stdout] 45 | |         .expect("something went wrong executing the given command, perhaps it couldn't be found?");
[INFO] [stdout]    | |__________________________________________________________________________________________________^
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.26s
[INFO] running `Command { std: "docker" "inspect" "767018815a23e4f24c00cce529af53197a67ea22469379f6ec699b33730e3bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "767018815a23e4f24c00cce529af53197a67ea22469379f6ec699b33730e3bb4", kill_on_drop: false }`
[INFO] [stdout] 767018815a23e4f24c00cce529af53197a67ea22469379f6ec699b33730e3bb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e92c179eaac7713b7c52930799a08cb8a9ed86d8c00febd4945f01523690762
[INFO] running `Command { std: "docker" "start" "-a" "2e92c179eaac7713b7c52930799a08cb8a9ed86d8c00febd4945f01523690762", kill_on_drop: false }`
[INFO] [stderr]    Compiling netns-exec v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 |    fn main() {
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 12 | |      let nsname = if env::args().len() > 2 {
[INFO] [stdout] 13 | |          env::args().nth(1).unwrap()
[INFO] [stdout] 14 | |      } else {
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |/     nix::unistd::execvp(&c_args.first().unwrap(), c_args.as_slice())
[INFO] [stdout] 45 | ||         .expect("something went wrong executing the given command, perhaps it couldn't be found?");
[INFO] [stdout]    | ||__________________________________________________________________________________________________- any code following this expression is unreachable
[INFO] [stdout] 46 | |  }
[INFO] [stdout]    | |__^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     nix::unistd::execvp(&c_args.first().unwrap(), c_args.as_slice())
[INFO] [stdout] 45 | |         .expect("something went wrong executing the given command, perhaps it couldn't be found?");
[INFO] [stdout]    | |__________________________________________________________________________________________________^
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "2e92c179eaac7713b7c52930799a08cb8a9ed86d8c00febd4945f01523690762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e92c179eaac7713b7c52930799a08cb8a9ed86d8c00febd4945f01523690762", kill_on_drop: false }`
[INFO] [stdout] 2e92c179eaac7713b7c52930799a08cb8a9ed86d8c00febd4945f01523690762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7ad2c3412cf71f08965b47cd02683f1ffb2ebe602ce41ed6eae3c776af23456d
[INFO] running `Command { std: "docker" "start" "-a" "7ad2c3412cf71f08965b47cd02683f1ffb2ebe602ce41ed6eae3c776af23456d", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:11:11
[INFO] [stderr]    |
[INFO] [stderr] 11 |    fn main() {
[INFO] [stderr]    |  ____________^
[INFO] [stderr] 12 | |      let nsname = if env::args().len() > 2 {
[INFO] [stderr] 13 | |          env::args().nth(1).unwrap()
[INFO] [stderr] 14 | |      } else {
[INFO] [stderr] ...  |
[INFO] [stderr] 44 | |/     nix::unistd::execvp(&c_args.first().unwrap(), c_args.as_slice())
[INFO] [stderr] 45 | ||         .expect("something went wrong executing the given command, perhaps it couldn't be found?");
[INFO] [stderr]    | ||__________________________________________________________________________________________________- any code following this expression is unreachable
[INFO] [stderr] 46 | |  }
[INFO] [stderr]    | |__^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr] note: this expression has type `Infallible`, which is uninhabited
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 | /     nix::unistd::execvp(&c_args.first().unwrap(), c_args.as_slice())
[INFO] [stderr] 45 | |         .expect("something went wrong executing the given command, perhaps it couldn't be found?");
[INFO] [stderr]    | |__________________________________________________________________________________________________^
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `netns-exec` (bin "netns-exec" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/netns_exec-974c5f6cd0970514)
[INFO] running `Command { std: "docker" "inspect" "7ad2c3412cf71f08965b47cd02683f1ffb2ebe602ce41ed6eae3c776af23456d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad2c3412cf71f08965b47cd02683f1ffb2ebe602ce41ed6eae3c776af23456d", kill_on_drop: false }`
[INFO] [stdout] 7ad2c3412cf71f08965b47cd02683f1ffb2ebe602ce41ed6eae3c776af23456d