[INFO] cloning repository https://github.com/28Smiles/flex-dns [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/28Smiles/flex-dns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F28Smiles%2Fflex-dns", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F28Smiles%2Fflex-dns'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] af5bb33edc749111181a5a3cdc23bef10ee063cc [INFO] checking 28Smiles/flex-dns against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F28Smiles%2Fflex-dns" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/28Smiles/flex-dns on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/28Smiles/flex-dns [INFO] finished tweaking git repo https://github.com/28Smiles/flex-dns [INFO] tweaked toml for git repo https://github.com/28Smiles/flex-dns written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/28Smiles/flex-dns 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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] df1175ad90697613b37358090a92477197ede4e3ec79de97e059f8d83f09d8d8 [INFO] running `Command { std: "docker" "start" "-a" "df1175ad90697613b37358090a92477197ede4e3ec79de97e059f8d83f09d8d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "df1175ad90697613b37358090a92477197ede4e3ec79de97e059f8d83f09d8d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df1175ad90697613b37358090a92477197ede4e3ec79de97e059f8d83f09d8d8", kill_on_drop: false }` [INFO] [stdout] df1175ad90697613b37358090a92477197ede4e3ec79de97e059f8d83f09d8d8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e96135e8fee380ed0bb7f48483136131625302b898b4e4a39a4973c165633646 [INFO] running `Command { std: "docker" "start" "-a" "e96135e8fee380ed0bb7f48483136131625302b898b4e4a39a4973c165633646", kill_on_drop: false }` [INFO] [stderr] Compiling semver v1.0.18 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Compiling lock_api v0.4.10 [INFO] [stderr] Checking hash32 v0.2.1 [INFO] [stderr] Checking simple-dns v0.5.3 [INFO] [stderr] Checking spin v0.9.8 [INFO] [stderr] Compiling rustc_version v0.4.0 [INFO] [stderr] Compiling heapless v0.7.16 [INFO] [stderr] Checking flex-dns v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(generic_const_exprs)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #76560 for more information [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(generic_const_exprs)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #76560 for more information [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/name_servers.rs:176:42 [INFO] [stdout] | [INFO] [stdout] 174 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] 175 | // Write the type specific data to the buffer. [INFO] [stdout] 176 | let rdata_len = self.rdata.write(message)?; [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 181 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/name_servers.rs:178:40 [INFO] [stdout] | [INFO] [stdout] 174 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 178 | bytes += rdata_len_placeholder(message, (rdata_len as u16).to_be_bytes()); [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 181 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/additional.rs:175:42 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] 174 | // Write the type specific data to the buffer. [INFO] [stdout] 175 | let rdata_len = self.rdata.write(message)?; [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/additional.rs:177:40 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 177 | bytes += rdata_len_placeholder(message, (rdata_len as u16).to_be_bytes()); [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/answer.rs:175:42 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] 174 | // Write the type specific data to the buffer. [INFO] [stdout] 175 | let rdata_len = self.rdata.write(message)?; [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/answer.rs:177:40 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 177 | bytes += rdata_len_placeholder(message, (rdata_len as u16).to_be_bytes()); [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/name_servers.rs:176:42 [INFO] [stdout] | [INFO] [stdout] 174 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] 175 | // Write the type specific data to the buffer. [INFO] [stdout] 176 | let rdata_len = self.rdata.write(message)?; [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 181 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/name_servers.rs:178:40 [INFO] [stdout] | [INFO] [stdout] 174 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 178 | bytes += rdata_len_placeholder(message, (rdata_len as u16).to_be_bytes()); [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 181 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/additional.rs:175:42 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] 174 | // Write the type specific data to the buffer. [INFO] [stdout] 175 | let rdata_len = self.rdata.write(message)?; [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/additional.rs:177:40 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 177 | bytes += rdata_len_placeholder(message, (rdata_len as u16).to_be_bytes()); [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/answer.rs:175:42 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] 174 | // Write the type specific data to the buffer. [INFO] [stdout] 175 | let rdata_len = self.rdata.write(message)?; [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*message` as mutable more than once at a time [INFO] [stdout] --> src/answer.rs:177:40 [INFO] [stdout] | [INFO] [stdout] 173 | let rdata_len_placeholder = message.write_placeholder::<2>()?; [INFO] [stdout] | ------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 177 | bytes += rdata_len_placeholder(message, (rdata_len as u16).to_be_bytes()); [INFO] [stdout] | ^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 180 | } [INFO] [stdout] | - first borrow might be used here, when `rdata_len_placeholder` is dropped and runs the destructor for type `impl for<'a> Fn(&'a mut DnsMessage, [u8; 2]) -> usize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 6 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stderr] error: could not compile `flex-dns` (lib) due to 7 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 6 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stderr] error: could not compile `flex-dns` (lib test) due to 7 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "e96135e8fee380ed0bb7f48483136131625302b898b4e4a39a4973c165633646", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e96135e8fee380ed0bb7f48483136131625302b898b4e4a39a4973c165633646", kill_on_drop: false }` [INFO] [stdout] e96135e8fee380ed0bb7f48483136131625302b898b4e4a39a4973c165633646