[INFO] cloning repository https://github.com/suxiaoshao/compiler-lab [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suxiaoshao/compiler-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuxiaoshao%2Fcompiler-lab", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuxiaoshao%2Fcompiler-lab'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ad0e02015632a5cce4aae840068d0d816e3eb690 [INFO] checking suxiaoshao/compiler-lab against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuxiaoshao%2Fcompiler-lab" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/suxiaoshao/compiler-lab 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/suxiaoshao/compiler-lab [INFO] finished tweaking git repo https://github.com/suxiaoshao/compiler-lab [INFO] tweaked toml for git repo https://github.com/suxiaoshao/compiler-lab written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/suxiaoshao/compiler-lab 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ca238ed802875dfa9996eaeec28496aa9817b135150b6c0ad9016f16c905f55a [INFO] running `Command { std: "docker" "start" "-a" "ca238ed802875dfa9996eaeec28496aa9817b135150b6c0ad9016f16c905f55a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ca238ed802875dfa9996eaeec28496aa9817b135150b6c0ad9016f16c905f55a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca238ed802875dfa9996eaeec28496aa9817b135150b6c0ad9016f16c905f55a", kill_on_drop: false }` [INFO] [stdout] ca238ed802875dfa9996eaeec28496aa9817b135150b6c0ad9016f16c905f55a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 823b898f18101c2dd5cab34f691df40c4138bd5a4f830d926d3f1d1202b7e9d4 [INFO] running `Command { std: "docker" "start" "-a" "823b898f18101c2dd5cab34f691df40c4138bd5a4f830d926d3f1d1202b7e9d4", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking compiler-lab v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `position` is never read [INFO] [stdout] --> src/tokenizer/read_token_state/empty.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub(in crate::tokenizer) struct Empty { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 23 | position: Position, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Empty` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `scope` is never read [INFO] [stdout] --> src/translator/identifier.rs:30:31 [INFO] [stdout] | [INFO] [stdout] 27 | pub(in crate::translator) struct Identifier { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 30 | pub(in crate::translator) scope: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Identifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `position` is never read [INFO] [stdout] --> src/tokenizer/read_token_state/empty.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub(in crate::tokenizer) struct Empty { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 23 | position: Position, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Empty` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `scope` is never read [INFO] [stdout] --> src/translator/identifier.rs:30:31 [INFO] [stdout] | [INFO] [stdout] 27 | pub(in crate::translator) struct Identifier { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 30 | pub(in crate::translator) scope: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Identifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.31s [INFO] running `Command { std: "docker" "inspect" "823b898f18101c2dd5cab34f691df40c4138bd5a4f830d926d3f1d1202b7e9d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "823b898f18101c2dd5cab34f691df40c4138bd5a4f830d926d3f1d1202b7e9d4", kill_on_drop: false }` [INFO] [stdout] 823b898f18101c2dd5cab34f691df40c4138bd5a4f830d926d3f1d1202b7e9d4 [INFO] checking suxiaoshao/compiler-lab against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuxiaoshao%2Fcompiler-lab" "/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/suxiaoshao/compiler-lab 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 git repo https://github.com/suxiaoshao/compiler-lab [INFO] finished tweaking git repo https://github.com/suxiaoshao/compiler-lab [INFO] tweaked toml for git repo https://github.com/suxiaoshao/compiler-lab written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/suxiaoshao/compiler-lab 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cd7245affd177e7dfeb474ad26947c2411e1fc9ce7a72d29ef9adc4387ec0936 [INFO] running `Command { std: "docker" "start" "-a" "cd7245affd177e7dfeb474ad26947c2411e1fc9ce7a72d29ef9adc4387ec0936", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cd7245affd177e7dfeb474ad26947c2411e1fc9ce7a72d29ef9adc4387ec0936", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cd7245affd177e7dfeb474ad26947c2411e1fc9ce7a72d29ef9adc4387ec0936", kill_on_drop: false }` [INFO] [stdout] cd7245affd177e7dfeb474ad26947c2411e1fc9ce7a72d29ef9adc4387ec0936 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c107c34ee6cf30e9cdabeb4f313367bdab04ff4645ff71fd3b5d12b7877f6eb7 [INFO] running `Command { std: "docker" "start" "-a" "c107c34ee6cf30e9cdabeb4f313367bdab04ff4645ff71fd3b5d12b7877f6eb7", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking compiler-lab v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `position` is never read [INFO] [stdout] --> src/tokenizer/read_token_state/empty.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub(in crate::tokenizer) struct Empty { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 23 | position: Position, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Empty` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `scope` is never read [INFO] [stdout] --> src/translator/identifier.rs:30:31 [INFO] [stdout] | [INFO] [stdout] 27 | pub(in crate::translator) struct Identifier { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 30 | pub(in crate::translator) scope: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Identifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `position` is never read [INFO] [stdout] --> src/tokenizer/read_token_state/empty.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub(in crate::tokenizer) struct Empty { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 23 | position: Position, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Empty` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `scope` is never read [INFO] [stdout] --> src/translator/identifier.rs:30:31 [INFO] [stdout] | [INFO] [stdout] 27 | pub(in crate::translator) struct Identifier { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 30 | pub(in crate::translator) scope: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Identifier` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.03s [INFO] running `Command { std: "docker" "inspect" "c107c34ee6cf30e9cdabeb4f313367bdab04ff4645ff71fd3b5d12b7877f6eb7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c107c34ee6cf30e9cdabeb4f313367bdab04ff4645ff71fd3b5d12b7877f6eb7", kill_on_drop: false }` [INFO] [stdout] c107c34ee6cf30e9cdabeb4f313367bdab04ff4645ff71fd3b5d12b7877f6eb7