[INFO] cloning repository https://github.com/joshgev/in-set [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joshgev/in-set" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshgev%2Fin-set", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshgev%2Fin-set'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9bf397cd38fca654458994c03fab9d54e4fcfe65 [INFO] checking joshgev/in-set against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshgev%2Fin-set" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/joshgev/in-set 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/joshgev/in-set [INFO] finished tweaking git repo https://github.com/joshgev/in-set [INFO] tweaked toml for git repo https://github.com/joshgev/in-set written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/joshgev/in-set 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 structopt-derive v0.4.15 [INFO] [stderr] Downloaded structopt v0.3.22 [INFO] [stderr] Downloaded synstructure v0.12.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0addd6b4fb8eb3b9351666a2a2c225c8ffab84518212fe2bccdbc4f393c00ab3 [INFO] running `Command { std: "docker" "start" "-a" "0addd6b4fb8eb3b9351666a2a2c225c8ffab84518212fe2bccdbc4f393c00ab3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0addd6b4fb8eb3b9351666a2a2c225c8ffab84518212fe2bccdbc4f393c00ab3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0addd6b4fb8eb3b9351666a2a2c225c8ffab84518212fe2bccdbc4f393c00ab3", kill_on_drop: false }` [INFO] [stdout] 0addd6b4fb8eb3b9351666a2a2c225c8ffab84518212fe2bccdbc4f393c00ab3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 06e6b68ff7d4a4824c962315f34ce52ece26b7fd0b1de110dfabd78c8d237640 [INFO] running `Command { std: "docker" "start" "-a" "06e6b68ff7d4a4824c962315f34ce52ece26b7fd0b1de110dfabd78c8d237640", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling libc v0.2.101 [INFO] [stderr] Compiling cc v1.0.69 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking gimli v0.25.0 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking object v0.26.1 [INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Compiling backtrace v0.3.61 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking addr2line v0.16.0 [INFO] [stderr] Compiling synstructure v0.12.5 [INFO] [stderr] Compiling structopt-derive v0.4.15 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking structopt v0.3.22 [INFO] [stderr] Checking in-set v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Context` [INFO] [stdout] --> src/main.rs:1:15 [INFO] [stdout] | [INFO] [stdout] 1 | use failure::{Context, Error}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `collections::HashSet` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | collections::HashSet, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Context` [INFO] [stdout] --> src/main.rs:1:15 [INFO] [stdout] | [INFO] [stdout] 1 | use failure::{Context, Error}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `collections::HashSet` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | collections::HashSet, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a method with this name may be added to the standard library in the future [INFO] [stdout] --> src/main.rs:40:10 [INFO] [stdout] | [INFO] [stdout] 40 | .intersperse("|".to_string()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] | [INFO] [stdout] 1 + #![feature(iter_intersperse)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a method with this name may be added to the standard library in the future [INFO] [stdout] --> src/main.rs:40:10 [INFO] [stdout] | [INFO] [stdout] 40 | .intersperse("|".to_string()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] | [INFO] [stdout] 1 + #![feature(iter_intersperse)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.39s [INFO] running `Command { std: "docker" "inspect" "06e6b68ff7d4a4824c962315f34ce52ece26b7fd0b1de110dfabd78c8d237640", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06e6b68ff7d4a4824c962315f34ce52ece26b7fd0b1de110dfabd78c8d237640", kill_on_drop: false }` [INFO] [stdout] 06e6b68ff7d4a4824c962315f34ce52ece26b7fd0b1de110dfabd78c8d237640