[INFO] cloning repository https://github.com/KillingSpark/sessionman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KillingSpark/sessionman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsessionman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsessionman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2d729ee9522a667eb37d990572d836f38439433
[INFO] testing KillingSpark/sessionman against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsessionman" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KillingSpark/sessionman on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KillingSpark/sessionman
[INFO] finished tweaking git repo https://github.com/KillingSpark/sessionman
[INFO] tweaked toml for git repo https://github.com/KillingSpark/sessionman written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/KillingSpark/sessionman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded acl-sys v1.2.2
[INFO] [stderr]   Downloaded acl-rs v0.1.0
[INFO] [stderr]   Downloaded rustbus v0.3.2
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c67cb4811d43b1ca5cb85f3457d9fb1daf6fe8bd16b9487f078777352e993d84
[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" "c67cb4811d43b1ca5cb85f3457d9fb1daf6fe8bd16b9487f078777352e993d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c67cb4811d43b1ca5cb85f3457d9fb1daf6fe8bd16b9487f078777352e993d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67cb4811d43b1ca5cb85f3457d9fb1daf6fe8bd16b9487f078777352e993d84", kill_on_drop: false }`
[INFO] [stdout] c67cb4811d43b1ca5cb85f3457d9fb1daf6fe8bd16b9487f078777352e993d84
[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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f903285ae716bf58fca4a80ade0632c0ed907b3ac3d8105651c46ac47b8b045d
[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" "f903285ae716bf58fca4a80ade0632c0ed907b3ac3d8105651c46ac47b8b045d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling acl-sys v1.2.2
[INFO] [stderr]    Compiling rustbus v0.3.2
[INFO] [stderr]    Compiling acl-rs v0.1.0
[INFO] [stderr]    Compiling sessionman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     return;
[INFO] [stdout]    |     ------ any code following this expression is unreachable
[INFO] [stdout] 14 | 
[INFO] [stdout] 15 |     let mut sesman = session::SessionManager::new().unwrap();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `session_id`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let session_id = sesman
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_session_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FREEZE_FILE_NAME`
[INFO] [stdout]  --> src/cgroupv2.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const FREEZE_FILE_NAME: &'static str = "cgroup.freeze";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `freeze`
[INFO] [stdout]    --> src/cgroupv2.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn freeze(&mut self) -> Result<(), Error> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `thaw`
[INFO] [stdout]    --> src/cgroupv2.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn thaw(&mut self) -> Result<(), Error> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IoError`
[INFO] [stdout]   --> src/seat.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     IoError(std::io::Error),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/session.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             self.session_aquire_seat(&session_id, &"seat0".into());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/session.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |             self.session_leave_seat(session_id, &seat_id);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.sessionman.cz46eu7h-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade" "/opt/rustwide/target/debug/deps/sessionman-eb14fb51ecbdeade.2j7rhm4ekhk8bwor.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librustbus-4cacc4d9e59991ee.rlib" "/opt/rustwide/target/debug/deps/libnix-35e73145597312bf.rlib" "/opt/rustwide/target/debug/deps/libacl_rs-5ba67373001451cc.rlib" "/opt/rustwide/target/debug/deps/libnix-bc2a01b2f236eb1f.rlib" "/opt/rustwide/target/debug/deps/libvoid-2252400e8925513f.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-3bb9a546b52233f2.rlib" "/opt/rustwide/target/debug/deps/libbitflags-8a5476fab5bb3232.rlib" "/opt/rustwide/target/debug/deps/libacl_sys-4893650d256d9910.rlib" "/opt/rustwide/target/debug/deps/liblibc-84c46fc0858d7ba9.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-7444fd17919e9af0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0ee2f67026959ab7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-df1bcd1e82256d04.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-ed9ecf1b54021131.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0ede66bb24e94b96.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7c2de7f50940865c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-b138d50085fd4683.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6576870d8f2b9ae2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-042a30c5f67b2c91.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-90b3063cd7b22527.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-17f9484f8dc4da1e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-df38345acd9d92e1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5e10ca10bdd9e54.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-3a4e739a77468800.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lacl" "-lutil" "-ldl" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lacl
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sessionman`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f903285ae716bf58fca4a80ade0632c0ed907b3ac3d8105651c46ac47b8b045d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f903285ae716bf58fca4a80ade0632c0ed907b3ac3d8105651c46ac47b8b045d", kill_on_drop: false }`
[INFO] [stdout] f903285ae716bf58fca4a80ade0632c0ed907b3ac3d8105651c46ac47b8b045d