[INFO] fetching crate mcmf 2.0.0...
[INFO] checking mcmf-2.0.0 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] extracting crate mcmf 2.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate mcmf 2.0.0 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcmf 2.0.0
[INFO] finished tweaking crates.io crate mcmf 2.0.0
[INFO] tweaked toml for crates.io crate mcmf 2.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "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] 357013dea13d2c2cff992beb1c39eec4753fc08050cdb53f977b82d5e7d20465
[INFO] running `Command { std: "docker" "start" "-a" "357013dea13d2c2cff992beb1c39eec4753fc08050cdb53f977b82d5e7d20465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "357013dea13d2c2cff992beb1c39eec4753fc08050cdb53f977b82d5e7d20465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "357013dea13d2c2cff992beb1c39eec4753fc08050cdb53f977b82d5e7d20465", kill_on_drop: false }`
[INFO] [stdout] 357013dea13d2c2cff992beb1c39eec4753fc08050cdb53f977b82d5e7d20465
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d094ca3c5b79e6d72929f7dcfd90e55db17bcf19164654831411eb61a941b6cf
[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" "d094ca3c5b79e6d72929f7dcfd90e55db17bcf19164654831411eb61a941b6cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling mcmf v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `gcc::Build`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]  --> build.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `gcc::Build::new`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]  --> build.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut config = gcc::Build::new();
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | / extern {
[INFO] [stdout] 38 | |     fn network_simplex_mcmf_i64(num_vertices: i64, num_edges: i64,
[INFO] [stdout] 39 | |         node_supply: *const i64, edge_a: *const i64, edge_b: *const i64,
[INFO] [stdout] 40 | |         edge_capacity: *const i64, edge_cost: *const i64, edge_flow_result: *mut i64) -> i64;
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^ ABI should be specified here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(missing_abi)]` on by default
[INFO] [stdout]    = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | / extern {
[INFO] [stdout] 38 | |     fn network_simplex_mcmf_i64(num_vertices: i64, num_edges: i64,
[INFO] [stdout] 39 | |         node_supply: *const i64, edge_a: *const i64, edge_b: *const i64,
[INFO] [stdout] 40 | |         edge_capacity: *const i64, edge_cost: *const i64, edge_flow_result: *mut i64) -> i64;
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^ ABI should be specified here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(missing_abi)]` on by default
[INFO] [stdout]    = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcmf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d094ca3c5b79e6d72929f7dcfd90e55db17bcf19164654831411eb61a941b6cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d094ca3c5b79e6d72929f7dcfd90e55db17bcf19164654831411eb61a941b6cf", kill_on_drop: false }`
[INFO] [stdout] d094ca3c5b79e6d72929f7dcfd90e55db17bcf19164654831411eb61a941b6cf