[INFO] cloning repository https://github.com/varesa/rs-network-stack [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varesa/rs-network-stack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-network-stack", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-network-stack'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 48d0cc59118c19121ae62a7a08e01ea891efd3d1 [INFO] checking varesa/rs-network-stack against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-network-stack" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/varesa/rs-network-stack on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config [INFO] started tweaking git repo https://github.com/varesa/rs-network-stack [INFO] finished tweaking git repo https://github.com/varesa/rs-network-stack [INFO] tweaked toml for git repo https://github.com/varesa/rs-network-stack written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/varesa/rs-network-stack 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio-uds v0.2.7 [INFO] [stderr] Downloaded network_bridge v0.1.1 [INFO] [stderr] Downloaded netdevice v0.1.1 [INFO] [stderr] Downloaded tokio-core v0.1.17 [INFO] [stderr] Downloaded internet-checksum v0.2.0 [INFO] [stderr] Downloaded tun-tap v0.1.2 [INFO] [stderr] Downloaded as-slice v0.1.4 [INFO] [stderr] Downloaded hash32 v0.1.1 [INFO] [stderr] Downloaded heapless v0.5.6 [INFO] [stderr] Downloaded nix v0.19.0 [INFO] [stderr] Downloaded futures v0.1.30 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1732bf188a67b9caf2d8cfd76c38bcc20a374f8050ee6d4fe67620e97113453c [INFO] running `Command { std: "docker" "start" "-a" "1732bf188a67b9caf2d8cfd76c38bcc20a374f8050ee6d4fe67620e97113453c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1732bf188a67b9caf2d8cfd76c38bcc20a374f8050ee6d4fe67620e97113453c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1732bf188a67b9caf2d8cfd76c38bcc20a374f8050ee6d4fe67620e97113453c", kill_on_drop: false }` [INFO] [stdout] 1732bf188a67b9caf2d8cfd76c38bcc20a374f8050ee6d4fe67620e97113453c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5ba5381ab8d59ced16e03f34a1302b94914583a833920a3b8628fe0e9c41df4a [INFO] running `Command { std: "docker" "start" "-a" "5ba5381ab8d59ced16e03f34a1302b94914583a833920a3b8628fe0e9c41df4a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking futures v0.1.30 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking smallvec v0.6.13 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Compiling nix v0.11.1 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling cc v1.0.62 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Compiling heapless v0.5.6 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking hash32 v0.1.1 [INFO] [stderr] Checking bitflags v0.7.0 [INFO] [stderr] Checking internet-checksum v0.2.0 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling tun-tap v0.1.2 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking generic-array v0.13.2 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Checking nix v0.19.0 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking netdevice v0.1.1 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking as-slice v0.1.4 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking network_bridge v0.1.1 [INFO] [stderr] Checking rs-network-stack v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `my_protocol_address` [INFO] [stdout] --> src/net.rs:69:5 [INFO] [stdout] | [INFO] [stdout] 69 | my_protocol_address: &ProtocolAddress<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_protocol_address` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `echo_request` [INFO] [stdout] --> src/net.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 70 | echo_request: &mut IcmpPacket<'a>, [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_echo_request` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send` [INFO] [stdout] --> src/net.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/net.rs:72:5 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_protocol_address` [INFO] [stdout] --> src/net.rs:69:5 [INFO] [stdout] | [INFO] [stdout] 69 | my_protocol_address: &ProtocolAddress<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_protocol_address` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `echo_request` [INFO] [stdout] --> src/net.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 70 | echo_request: &mut IcmpPacket<'a>, [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_echo_request` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send` [INFO] [stdout] --> src/net.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/net.rs:72:5 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | IoError(std::io::Error), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 3 | IoError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | IoError(std::io::Error), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 3 | IoError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:14 [INFO] [stdout] | [INFO] [stdout] 4 | NixError(nix::Error), [INFO] [stdout] | -------- ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 4 | NixError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `reply_ping` is never used [INFO] [stdout] --> src/net.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn reply_ping<'a, F> ( [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ethertype` and `bytes` are never read [INFO] [stdout] --> src/protocols/ethernet.rs:150:5 [INFO] [stdout] | [INFO] [stdout] 149 | pub struct UnknownPayload<'a> { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 150 | ethertype: u16, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 151 | bytes: &'a mut [u8], [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UnknownPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `options` is never read [INFO] [stdout] --> src/protocols/ipv4.rs:161:5 [INFO] [stdout] | [INFO] [stdout] 157 | pub struct Ipv4Header<'a> { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 161 | options: Option<&'a mut [u8]> [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 16 - panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] 16 + panic!("Usage: {} ", args.get(0).unwrap()); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:14 [INFO] [stdout] | [INFO] [stdout] 4 | NixError(nix::Error), [INFO] [stdout] | -------- ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 4 | NixError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `reply_ping` is never used [INFO] [stdout] --> src/net.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn reply_ping<'a, F> ( [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ethertype` and `bytes` are never read [INFO] [stdout] --> src/protocols/ethernet.rs:150:5 [INFO] [stdout] | [INFO] [stdout] 149 | pub struct UnknownPayload<'a> { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 150 | ethertype: u16, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 151 | bytes: &'a mut [u8], [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UnknownPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `options` is never read [INFO] [stdout] --> src/protocols/ipv4.rs:161:5 [INFO] [stdout] | [INFO] [stdout] 157 | pub struct Ipv4Header<'a> { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 161 | options: Option<&'a mut [u8]> [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 16 - panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] 16 + panic!("Usage: {} ", args.get(0).unwrap()); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:25:42 [INFO] [stdout] | [INFO] [stdout] 25 | let htype = header[0..2].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:26:42 [INFO] [stdout] | [INFO] [stdout] 26 | let ptype = header[2..4].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/ethernet.rs:129:14 [INFO] [stdout] | [INFO] [stdout] 129 | ethertype.clone().read_u16::().unwrap() [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:25:42 [INFO] [stdout] | [INFO] [stdout] 25 | let htype = header[0..2].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:26:42 [INFO] [stdout] | [INFO] [stdout] 26 | let ptype = header[2..4].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/ethernet.rs:129:14 [INFO] [stdout] | [INFO] [stdout] 129 | ethertype.clone().read_u16::().unwrap() [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.69s [INFO] running `Command { std: "docker" "inspect" "5ba5381ab8d59ced16e03f34a1302b94914583a833920a3b8628fe0e9c41df4a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5ba5381ab8d59ced16e03f34a1302b94914583a833920a3b8628fe0e9c41df4a", kill_on_drop: false }` [INFO] [stdout] 5ba5381ab8d59ced16e03f34a1302b94914583a833920a3b8628fe0e9c41df4a [INFO] checking varesa/rs-network-stack against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-network-stack" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/varesa/rs-network-stack on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config [INFO] started tweaking git repo https://github.com/varesa/rs-network-stack [INFO] finished tweaking git repo https://github.com/varesa/rs-network-stack [INFO] tweaked toml for git repo https://github.com/varesa/rs-network-stack written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/varesa/rs-network-stack 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 09fa95f47124b6360c811fe177c27c0f8a4c34600019c6ee498f39ca8c42ff33 [INFO] running `Command { std: "docker" "start" "-a" "09fa95f47124b6360c811fe177c27c0f8a4c34600019c6ee498f39ca8c42ff33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "09fa95f47124b6360c811fe177c27c0f8a4c34600019c6ee498f39ca8c42ff33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "09fa95f47124b6360c811fe177c27c0f8a4c34600019c6ee498f39ca8c42ff33", kill_on_drop: false }` [INFO] [stdout] 09fa95f47124b6360c811fe177c27c0f8a4c34600019c6ee498f39ca8c42ff33 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c79aa9a72fe56052d8cce01dcdd668da099d7ad5e71a7e3fb0b1ff3d4d6549d6 [INFO] running `Command { std: "docker" "start" "-a" "c79aa9a72fe56052d8cce01dcdd668da099d7ad5e71a7e3fb0b1ff3d4d6549d6", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking futures v0.1.30 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking smallvec v0.6.13 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling cc v1.0.62 [INFO] [stderr] Compiling nix v0.11.1 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Compiling heapless v0.5.6 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking hash32 v0.1.1 [INFO] [stderr] Checking bitflags v0.7.0 [INFO] [stderr] Checking internet-checksum v0.2.0 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Compiling tun-tap v0.1.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking nix v0.19.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Checking generic-array v0.13.2 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking netdevice v0.1.1 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking as-slice v0.1.4 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking network_bridge v0.1.1 [INFO] [stderr] Checking rs-network-stack v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `my_protocol_address` [INFO] [stdout] --> src/net.rs:69:5 [INFO] [stdout] | [INFO] [stdout] 69 | my_protocol_address: &ProtocolAddress<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_protocol_address` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `echo_request` [INFO] [stdout] --> src/net.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 70 | echo_request: &mut IcmpPacket<'a>, [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_echo_request` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send` [INFO] [stdout] --> src/net.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/net.rs:72:5 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | IoError(std::io::Error), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 3 | IoError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:14 [INFO] [stdout] | [INFO] [stdout] 4 | NixError(nix::Error), [INFO] [stdout] | -------- ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 4 | NixError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `reply_ping` is never used [INFO] [stdout] --> src/net.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn reply_ping<'a, F> ( [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ethertype` and `bytes` are never read [INFO] [stdout] --> src/protocols/ethernet.rs:150:5 [INFO] [stdout] | [INFO] [stdout] 149 | pub struct UnknownPayload<'a> { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 150 | ethertype: u16, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 151 | bytes: &'a mut [u8], [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UnknownPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `options` is never read [INFO] [stdout] --> src/protocols/ipv4.rs:161:5 [INFO] [stdout] | [INFO] [stdout] 157 | pub struct Ipv4Header<'a> { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 161 | options: Option<&'a mut [u8]> [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 16 - panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] 16 + panic!("Usage: {} ", args.get(0).unwrap()); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:25:42 [INFO] [stdout] | [INFO] [stdout] 25 | let htype = header[0..2].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:26:42 [INFO] [stdout] | [INFO] [stdout] 26 | let ptype = header[2..4].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/ethernet.rs:129:14 [INFO] [stdout] | [INFO] [stdout] 129 | ethertype.clone().read_u16::().unwrap() [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_protocol_address` [INFO] [stdout] --> src/net.rs:69:5 [INFO] [stdout] | [INFO] [stdout] 69 | my_protocol_address: &ProtocolAddress<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_protocol_address` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `echo_request` [INFO] [stdout] --> src/net.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 70 | echo_request: &mut IcmpPacket<'a>, [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_echo_request` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send` [INFO] [stdout] --> src/net.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/net.rs:72:5 [INFO] [stdout] | [INFO] [stdout] 72 | mut send: F [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | IoError(std::io::Error), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 3 | IoError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:14 [INFO] [stdout] | [INFO] [stdout] 4 | NixError(nix::Error), [INFO] [stdout] | -------- ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 4 | NixError(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `reply_ping` is never used [INFO] [stdout] --> src/net.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn reply_ping<'a, F> ( [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ethertype` and `bytes` are never read [INFO] [stdout] --> src/protocols/ethernet.rs:150:5 [INFO] [stdout] | [INFO] [stdout] 149 | pub struct UnknownPayload<'a> { [INFO] [stdout] | -------------- fields in this struct [INFO] [stdout] 150 | ethertype: u16, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 151 | bytes: &'a mut [u8], [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UnknownPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `options` is never read [INFO] [stdout] --> src/protocols/ipv4.rs:161:5 [INFO] [stdout] | [INFO] [stdout] 157 | pub struct Ipv4Header<'a> { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 161 | options: Option<&'a mut [u8]> [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/main.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 16 - panic!(format!("Usage: {} ", args.get(0).unwrap())); [INFO] [stdout] 16 + panic!("Usage: {} ", args.get(0).unwrap()); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:25:42 [INFO] [stdout] | [INFO] [stdout] 25 | let htype = header[0..2].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/arp.rs:26:42 [INFO] [stdout] | [INFO] [stdout] 26 | let ptype = header[2..4].as_ref().clone().read_u16::().unwrap(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type [INFO] [stdout] --> src/protocols/ethernet.rs:129:14 [INFO] [stdout] | [INFO] [stdout] 129 | ethertype.clone().read_u16::().unwrap() [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.15s [INFO] running `Command { std: "docker" "inspect" "c79aa9a72fe56052d8cce01dcdd668da099d7ad5e71a7e3fb0b1ff3d4d6549d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c79aa9a72fe56052d8cce01dcdd668da099d7ad5e71a7e3fb0b1ff3d4d6549d6", kill_on_drop: false }` [INFO] [stdout] c79aa9a72fe56052d8cce01dcdd668da099d7ad5e71a7e3fb0b1ff3d4d6549d6