[INFO] cloning repository https://github.com/yurrriq/rust-in-action [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yurrriq/rust-in-action" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyurrriq%2Frust-in-action", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyurrriq%2Frust-in-action'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 23e431a917a93548837ee24f23f132ee0e6ce5ad [INFO] checking yurrriq/rust-in-action against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyurrriq%2Frust-in-action" "/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/yurrriq/rust-in-action 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/yurrriq/rust-in-action [INFO] finished tweaking git repo https://github.com/yurrriq/rust-in-action [INFO] tweaked toml for git repo https://github.com/yurrriq/rust-in-action written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/yurrriq/rust-in-action 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] 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] 35aa5c1185cb37a16b1373137f06169ae0a59b72c12f598d292e13d36fcb2b6c [INFO] running `Command { std: "docker" "start" "-a" "35aa5c1185cb37a16b1373137f06169ae0a59b72c12f598d292e13d36fcb2b6c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "35aa5c1185cb37a16b1373137f06169ae0a59b72c12f598d292e13d36fcb2b6c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35aa5c1185cb37a16b1373137f06169ae0a59b72c12f598d292e13d36fcb2b6c", kill_on_drop: false }` [INFO] [stdout] 35aa5c1185cb37a16b1373137f06169ae0a59b72c12f598d292e13d36fcb2b6c [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] 675b3f340fc82e85f398741832047d6d60f0c6e42459e24023be943bc10cbaee [INFO] running `Command { std: "docker" "start" "-a" "675b3f340fc82e85f398741832047d6d60f0c6e42459e24023be943bc10cbaee", kill_on_drop: false }` [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking rust-in-action v0.3.21 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/ch4-sat-mailbox.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Message { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 8 | to: u64, [INFO] [stdout] 9 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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: unused variable: `sat_a` [INFO] [stdout] --> src/bin/ch4-check-sats.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let sat_a = check_status(sat_a); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/bin/ch4-check-sats.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct CubeSat { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 3 | id: u64, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `CubeSat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sat_a` [INFO] [stdout] --> src/bin/ch4-check-sats.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let sat_a = check_status(sat_a); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/bin/ch4-check-sats.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct CubeSat { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 3 | id: u64, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `CubeSat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/ch4-sat-mailbox.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Message { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 8 | to: u64, [INFO] [stdout] 9 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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 3.43s [INFO] running `Command { std: "docker" "inspect" "675b3f340fc82e85f398741832047d6d60f0c6e42459e24023be943bc10cbaee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "675b3f340fc82e85f398741832047d6d60f0c6e42459e24023be943bc10cbaee", kill_on_drop: false }` [INFO] [stdout] 675b3f340fc82e85f398741832047d6d60f0c6e42459e24023be943bc10cbaee [INFO] checking yurrriq/rust-in-action against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyurrriq%2Frust-in-action" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yurrriq/rust-in-action 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/yurrriq/rust-in-action [INFO] finished tweaking git repo https://github.com/yurrriq/rust-in-action [INFO] tweaked toml for git repo https://github.com/yurrriq/rust-in-action written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/yurrriq/rust-in-action 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-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 95412e370447fdcf03441f9282032bd87d5aee14fa562c278423659d1f9d62f3 [INFO] running `Command { std: "docker" "start" "-a" "95412e370447fdcf03441f9282032bd87d5aee14fa562c278423659d1f9d62f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "95412e370447fdcf03441f9282032bd87d5aee14fa562c278423659d1f9d62f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "95412e370447fdcf03441f9282032bd87d5aee14fa562c278423659d1f9d62f3", kill_on_drop: false }` [INFO] [stdout] 95412e370447fdcf03441f9282032bd87d5aee14fa562c278423659d1f9d62f3 [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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7b8d3e193750f9f4edfc1d1feba1d612bc9ea6e66547cec397e03dc431ed19d4 [INFO] running `Command { std: "docker" "start" "-a" "7b8d3e193750f9f4edfc1d1feba1d612bc9ea6e66547cec397e03dc431ed19d4", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking rust-in-action v0.3.21 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/ch4-sat-mailbox.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Message { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 8 | to: u64, [INFO] [stdout] 9 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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: unused variable: `sat_a` [INFO] [stdout] --> src/bin/ch4-check-sats.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let sat_a = check_status(sat_a); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/bin/ch4-check-sats.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct CubeSat { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 3 | id: u64, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `CubeSat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/ch4-sat-mailbox.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Message { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 8 | to: u64, [INFO] [stdout] 9 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [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: unused variable: `sat_a` [INFO] [stdout] --> src/bin/ch4-check-sats.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let sat_a = check_status(sat_a); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_sat_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/bin/ch4-check-sats.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct CubeSat { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 3 | id: u64, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `CubeSat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.57s [INFO] running `Command { std: "docker" "inspect" "7b8d3e193750f9f4edfc1d1feba1d612bc9ea6e66547cec397e03dc431ed19d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b8d3e193750f9f4edfc1d1feba1d612bc9ea6e66547cec397e03dc431ed19d4", kill_on_drop: false }` [INFO] [stdout] 7b8d3e193750f9f4edfc1d1feba1d612bc9ea6e66547cec397e03dc431ed19d4