[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 try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKillingSpark%2Fsessionman" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KillingSpark/sessionman on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-3/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustbus v0.3.2
[INFO] [stderr]   Downloaded acl-rs v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", 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] 70ea70f02c77fda9f0318077e70454734ccb09f2d41078d0356cbdfaa3ad368c
[INFO] running `Command { std: "docker" "start" "-a" "70ea70f02c77fda9f0318077e70454734ccb09f2d41078d0356cbdfaa3ad368c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70ea70f02c77fda9f0318077e70454734ccb09f2d41078d0356cbdfaa3ad368c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ea70f02c77fda9f0318077e70454734ccb09f2d41078d0356cbdfaa3ad368c", kill_on_drop: false }`
[INFO] [stdout] 70ea70f02c77fda9f0318077e70454734ccb09f2d41078d0356cbdfaa3ad368c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d44769ca044a465f9515a4834ace68df6944627d34d25ad35fd7690bc82c4ee5
[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" "d44769ca044a465f9515a4834ace68df6944627d34d25ad35fd7690bc82c4ee5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling nix v0.16.1
[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/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.sessionman.1xj1wcuj-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e" "/opt/rustwide/target/debug/deps/sessionman-9122b7a0c6cd226e.2e1h1hc7sl5y0nkb.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librustbus-2363af360f7e668b.rlib" "/opt/rustwide/target/debug/deps/libnix-ef33b3c98221f5a4.rlib" "/opt/rustwide/target/debug/deps/libacl_rs-5febe7402ffbd87e.rlib" "/opt/rustwide/target/debug/deps/libnix-89f2e9d53a29df78.rlib" "/opt/rustwide/target/debug/deps/libvoid-246d5d222e55a1ce.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-b00c34326580381c.rlib" "/opt/rustwide/target/debug/deps/libbitflags-56eca94422237621.rlib" "/opt/rustwide/target/debug/deps/libacl_sys-8a68fd8fc609f983.rlib" "/opt/rustwide/target/debug/deps/liblibc-0f93f82ffc86c95c.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-5989bcf78182f65e.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-4d6da34bc177af8d.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-10e0d6c948699482.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-c2318e2415657781.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-3815b93ed84badbb.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-d7999143d95238cb.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-c58298a0d40df8b8.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-b7de97e2ba6fb4e2.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6f71c9f654d72cce.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-95ea48ddc44a311b.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-7402cd4761aebc14.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-68f423c59dc48a40.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-54580c7798bf2225.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-95a4d456339b7385.rlib" "-Wl,-Bdynamic" "-lacl" "-lutil" "-ldl" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[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" "d44769ca044a465f9515a4834ace68df6944627d34d25ad35fd7690bc82c4ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d44769ca044a465f9515a4834ace68df6944627d34d25ad35fd7690bc82c4ee5", kill_on_drop: false }`
[INFO] [stdout] d44769ca044a465f9515a4834ace68df6944627d34d25ad35fd7690bc82c4ee5