[INFO] fetching crate px2rem 0.1.0... [INFO] checking px2rem-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate px2rem 0.1.0 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate px2rem 0.1.0 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 crates.io crate px2rem 0.1.0 [INFO] finished tweaking crates.io crate px2rem 0.1.0 [INFO] tweaked toml for crates.io crate px2rem 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate px2rem 0.1.0 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] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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] 5fb8a589610fa6288da7f29603890251c2aaa19d03c1a14c721d879541fac7fa [INFO] running `Command { std: "docker" "start" "-a" "5fb8a589610fa6288da7f29603890251c2aaa19d03c1a14c721d879541fac7fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5fb8a589610fa6288da7f29603890251c2aaa19d03c1a14c721d879541fac7fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5fb8a589610fa6288da7f29603890251c2aaa19d03c1a14c721d879541fac7fa", kill_on_drop: false }` [INFO] [stdout] 5fb8a589610fa6288da7f29603890251c2aaa19d03c1a14c721d879541fac7fa [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] 14d6c8c3ec720f8970747b418167833b91f88426f70fba1a1240b6ab1af5334a [INFO] running `Command { std: "docker" "start" "-a" "14d6c8c3ec720f8970747b418167833b91f88426f70fba1a1240b6ab1af5334a", kill_on_drop: false }` [INFO] [stderr] Checking regex-syntax v0.6.28 [INFO] [stderr] Checking aho-corasick v0.7.20 [INFO] [stderr] Checking regex v1.7.1 [INFO] [stderr] Checking px2rem v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/lib.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::{self, prelude::*}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/lib.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/lib.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::{self, prelude::*}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `res` is never read [INFO] [stdout] --> src/lib.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let mut res = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `res` is never read [INFO] [stdout] --> src/lib.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let mut res = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.16s [INFO] running `Command { std: "docker" "inspect" "14d6c8c3ec720f8970747b418167833b91f88426f70fba1a1240b6ab1af5334a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "14d6c8c3ec720f8970747b418167833b91f88426f70fba1a1240b6ab1af5334a", kill_on_drop: false }` [INFO] [stdout] 14d6c8c3ec720f8970747b418167833b91f88426f70fba1a1240b6ab1af5334a [INFO] checking px2rem-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate px2rem 0.1.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate px2rem 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate px2rem 0.1.0 [INFO] finished tweaking crates.io crate px2rem 0.1.0 [INFO] tweaked toml for crates.io crate px2rem 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate px2rem 0.1.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 87fba1e958362852b5878e041ce8a76f16de70c8b4e3fcf80199111e1a2de04f [INFO] running `Command { std: "docker" "start" "-a" "87fba1e958362852b5878e041ce8a76f16de70c8b4e3fcf80199111e1a2de04f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "87fba1e958362852b5878e041ce8a76f16de70c8b4e3fcf80199111e1a2de04f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "87fba1e958362852b5878e041ce8a76f16de70c8b4e3fcf80199111e1a2de04f", kill_on_drop: false }` [INFO] [stdout] 87fba1e958362852b5878e041ce8a76f16de70c8b4e3fcf80199111e1a2de04f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 62fd3332c923329a11b45dfd61cd821ac92f6a996bde92c7000be36ed0faf810 [INFO] running `Command { std: "docker" "start" "-a" "62fd3332c923329a11b45dfd61cd821ac92f6a996bde92c7000be36ed0faf810", kill_on_drop: false }` [INFO] [stderr] Checking regex-syntax v0.6.28 [INFO] [stderr] Checking aho-corasick v0.7.20 [INFO] [stderr] Checking regex v1.7.1 [INFO] [stderr] Checking px2rem v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/lib.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::{self, prelude::*}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/lib.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::{self, prelude::*}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/lib.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `res` is never read [INFO] [stdout] --> src/lib.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let mut res = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `res` is never read [INFO] [stdout] --> src/lib.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let mut res = String::new(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 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 2.77s [INFO] running `Command { std: "docker" "inspect" "62fd3332c923329a11b45dfd61cd821ac92f6a996bde92c7000be36ed0faf810", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "62fd3332c923329a11b45dfd61cd821ac92f6a996bde92c7000be36ed0faf810", kill_on_drop: false }` [INFO] [stdout] 62fd3332c923329a11b45dfd61cd821ac92f6a996bde92c7000be36ed0faf810