[INFO] cloning repository https://github.com/divinusdracodominus/axolotl [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/divinusdracodominus/axolotl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivinusdracodominus%2Faxolotl", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivinusdracodominus%2Faxolotl'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2870b69c89b252c35f3072c8e93bf680f26b7159 [INFO] checking divinusdracodominus/axolotl against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivinusdracodominus%2Faxolotl" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/divinusdracodominus/axolotl 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] started tweaking git repo https://github.com/divinusdracodominus/axolotl [INFO] finished tweaking git repo https://github.com/divinusdracodominus/axolotl [INFO] tweaked toml for git repo https://github.com/divinusdracodominus/axolotl written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/divinusdracodominus/axolotl 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] Downloading crates ... [INFO] [stderr] Downloaded err-derive v0.3.0 [INFO] [stderr] Downloaded nix v0.22.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9322a8acd0a491020b6b6727dd55d089ec8e3c56856526835d16ce78b1d69320 [INFO] running `Command { std: "docker" "start" "-a" "9322a8acd0a491020b6b6727dd55d089ec8e3c56856526835d16ce78b1d69320", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9322a8acd0a491020b6b6727dd55d089ec8e3c56856526835d16ce78b1d69320", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9322a8acd0a491020b6b6727dd55d089ec8e3c56856526835d16ce78b1d69320", kill_on_drop: false }` [INFO] [stdout] 9322a8acd0a491020b6b6727dd55d089ec8e3c56856526835d16ce78b1d69320 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7d1e9c843891a3a5ae52a690556f2641fe649401914ae567bfcc6f026c1cf80a [INFO] running `Command { std: "docker" "start" "-a" "7d1e9c843891a3a5ae52a690556f2641fe649401914ae567bfcc6f026c1cf80a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling rustversion v1.0.5 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling serde_derive v1.0.127 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling serde v1.0.127 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling err-derive v0.3.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking nix v0.22.0 [INFO] [stderr] Compiling synstructure v0.12.5 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking ron v0.6.4 [INFO] [stderr] Checking axolotl v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `libc::c_char` [INFO] [stdout] --> src/runtime.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use libc::c_char; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `execv` [INFO] [stdout] --> src/runtime.rs:7:14 [INFO] [stdout] | [INFO] [stdout] 7 | unistd::{execv, ftruncate}, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/runtime.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/runtime.rs:43:99 [INFO] [stdout] | [INFO] [stdout] 43 | pub unsafe fn axolotl_exec, S: AsRef>(value: &T, executable: P, args: &[S]) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `stability`, `arch`, `motherboard`, `operating_system`, and `backend` are never read [INFO] [stdout] --> src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct Toolchain { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 4 | stability: String, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 5 | arch: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 6 | motherboard: String, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 7 | operating_system: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] 8 | backend: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/lib.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct ToolchainConfig { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 13 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `libc::c_char` [INFO] [stdout] --> src/runtime.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use libc::c_char; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `execv` [INFO] [stdout] --> src/runtime.rs:7:14 [INFO] [stdout] | [INFO] [stdout] 7 | unistd::{execv, ftruncate}, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/runtime.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/runtime.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 51 | ftruncate(descriptor, 1000); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 51 | let _ = ftruncate(descriptor, 1000); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/runtime.rs:43:99 [INFO] [stdout] | [INFO] [stdout] 43 | pub unsafe fn axolotl_exec, S: AsRef>(value: &T, executable: P, args: &[S]) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `stability`, `arch`, `motherboard`, `operating_system`, and `backend` are never read [INFO] [stdout] --> src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct Toolchain { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 4 | stability: String, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 5 | arch: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 6 | motherboard: String, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] 7 | operating_system: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] 8 | backend: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/lib.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct ToolchainConfig { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 13 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/runtime.rs:51:5 [INFO] [stdout] | [INFO] [stdout] 51 | ftruncate(descriptor, 1000); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 51 | let _ = ftruncate(descriptor, 1000); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.35s [INFO] running `Command { std: "docker" "inspect" "7d1e9c843891a3a5ae52a690556f2641fe649401914ae567bfcc6f026c1cf80a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7d1e9c843891a3a5ae52a690556f2641fe649401914ae567bfcc6f026c1cf80a", kill_on_drop: false }` [INFO] [stdout] 7d1e9c843891a3a5ae52a690556f2641fe649401914ae567bfcc6f026c1cf80a