[INFO] fetching crate isolate 0.1.2... [INFO] checking isolate-0.1.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate isolate 0.1.2 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate isolate 0.1.2 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 isolate 0.1.2 [INFO] finished tweaking crates.io crate isolate 0.1.2 [INFO] tweaked toml for crates.io crate isolate 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 24 packages [INFO] [stderr] Adding aho-corasick v0.6.10 (latest: v1.1.3) [INFO] [stderr] Adding bitflags v0.9.1 (latest: v2.5.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding docopt v0.8.3 (latest: v1.1.1) [INFO] [stderr] Adding nix v0.9.0 (latest: v0.28.0) [INFO] [stderr] Adding regex v0.2.11 (latest: v1.10.4) [INFO] [stderr] Adding regex-syntax v0.5.6 (latest: v0.8.3) [INFO] [stderr] Adding strsim v0.6.0 (latest: v0.11.1) [INFO] [stderr] Adding thread_local v0.3.6 (latest: v1.1.8) [INFO] [stderr] Adding toml v0.4.10 (latest: v0.8.12) [INFO] [stderr] Adding ucd-util v0.1.10 (latest: v0.2.1) [INFO] [stderr] Adding unshare v0.2.0 (latest: v0.7.0) [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] Downloading crates ... [INFO] [stderr] Downloaded nix v0.9.0 [INFO] [stderr] Downloaded unshare v0.2.0 [INFO] [stderr] Downloaded docopt v0.8.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 92a02644aa3381834632ec1faea6e59ac4ca52635266c48660bc826038fc7a4c [INFO] running `Command { std: "docker" "start" "-a" "92a02644aa3381834632ec1faea6e59ac4ca52635266c48660bc826038fc7a4c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "92a02644aa3381834632ec1faea6e59ac4ca52635266c48660bc826038fc7a4c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92a02644aa3381834632ec1faea6e59ac4ca52635266c48660bc826038fc7a4c", kill_on_drop: false }` [INFO] [stdout] 92a02644aa3381834632ec1faea6e59ac4ca52635266c48660bc826038fc7a4c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 295096833e54bb6feaa54012dd77a5fde78980b4fb09d5adfb1f439c5413c99d [INFO] running `Command { std: "docker" "start" "-a" "295096833e54bb6feaa54012dd77a5fde78980b4fb09d5adfb1f439c5413c99d", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking bitflags v0.9.1 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking nix v0.9.0 [INFO] [stderr] Checking regex v0.2.11 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking unshare v0.2.0 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking docopt v0.8.3 [INFO] [stderr] Checking isolate v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `config` is never read [INFO] [stdout] --> src/main.rs:144:5 [INFO] [stdout] | [INFO] [stdout] 141 | struct Command { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 144 | config: Configuration, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `config` is never read [INFO] [stdout] --> src/main.rs:144:5 [INFO] [stdout] | [INFO] [stdout] 141 | struct Command { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 144 | config: Configuration, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.29s [INFO] running `Command { std: "docker" "inspect" "295096833e54bb6feaa54012dd77a5fde78980b4fb09d5adfb1f439c5413c99d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "295096833e54bb6feaa54012dd77a5fde78980b4fb09d5adfb1f439c5413c99d", kill_on_drop: false }` [INFO] [stdout] 295096833e54bb6feaa54012dd77a5fde78980b4fb09d5adfb1f439c5413c99d [INFO] checking isolate-0.1.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate isolate 0.1.2 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate isolate 0.1.2 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] started tweaking crates.io crate isolate 0.1.2 [INFO] finished tweaking crates.io crate isolate 0.1.2 [INFO] tweaked toml for crates.io crate isolate 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3d3b7d5bec70792e9b65f8c763211709dab5215f1614e1e6fdbb0a8eaedd362d [INFO] running `Command { std: "docker" "start" "-a" "3d3b7d5bec70792e9b65f8c763211709dab5215f1614e1e6fdbb0a8eaedd362d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3d3b7d5bec70792e9b65f8c763211709dab5215f1614e1e6fdbb0a8eaedd362d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d3b7d5bec70792e9b65f8c763211709dab5215f1614e1e6fdbb0a8eaedd362d", kill_on_drop: false }` [INFO] [stdout] 3d3b7d5bec70792e9b65f8c763211709dab5215f1614e1e6fdbb0a8eaedd362d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4cfab927f29346ec7d3a4629b4d24c2351bc3aff07bf346c7beba9913f0127ae [INFO] running `Command { std: "docker" "start" "-a" "4cfab927f29346ec7d3a4629b4d24c2351bc3aff07bf346c7beba9913f0127ae", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking bitflags v0.9.1 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking nix v0.9.0 [INFO] [stderr] Checking regex v0.2.11 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking unshare v0.2.0 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking docopt v0.8.3 [INFO] [stderr] Checking isolate v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `config` is never read [INFO] [stdout] --> src/main.rs:144:5 [INFO] [stdout] | [INFO] [stdout] 141 | struct Command { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 144 | config: Configuration, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `config` is never read [INFO] [stdout] --> src/main.rs:144:5 [INFO] [stdout] | [INFO] [stdout] 141 | struct Command { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 144 | config: Configuration, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.40s [INFO] running `Command { std: "docker" "inspect" "4cfab927f29346ec7d3a4629b4d24c2351bc3aff07bf346c7beba9913f0127ae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4cfab927f29346ec7d3a4629b4d24c2351bc3aff07bf346c7beba9913f0127ae", kill_on_drop: false }` [INFO] [stdout] 4cfab927f29346ec7d3a4629b4d24c2351bc3aff07bf346c7beba9913f0127ae