[INFO] cloning repository https://github.com/thomasfermi/JackCompiler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thomasfermi/JackCompiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasfermi%2FJackCompiler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasfermi%2FJackCompiler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e8f6f882182fbb0d2485afd13155c2436f1a506f [INFO] checking thomasfermi/JackCompiler against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasfermi%2FJackCompiler" "/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/thomasfermi/JackCompiler 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/thomasfermi/JackCompiler [INFO] finished tweaking git repo https://github.com/thomasfermi/JackCompiler [INFO] tweaked toml for git repo https://github.com/thomasfermi/JackCompiler written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/thomasfermi/JackCompiler 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] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded peek-nth v0.2.0 [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] 860cc97c1600ef0c03a0f8f3e19687099ae4b500ec2f3bddf63a4e212313b059 [INFO] running `Command { std: "docker" "start" "-a" "860cc97c1600ef0c03a0f8f3e19687099ae4b500ec2f3bddf63a4e212313b059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "860cc97c1600ef0c03a0f8f3e19687099ae4b500ec2f3bddf63a4e212313b059", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "860cc97c1600ef0c03a0f8f3e19687099ae4b500ec2f3bddf63a4e212313b059", kill_on_drop: false }` [INFO] [stdout] 860cc97c1600ef0c03a0f8f3e19687099ae4b500ec2f3bddf63a4e212313b059 [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] bf36f989b8d3677e83f5ecd6e158848d2c2a599821b50d15467684548eee0f1c [INFO] running `Command { std: "docker" "start" "-a" "bf36f989b8d3677e83f5ecd6e158848d2c2a599821b50d15467684548eee0f1c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.45 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Compiling regex v1.1.0 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking textwrap v0.10.0 [INFO] [stderr] Checking regex-syntax v0.6.4 [INFO] [stderr] Checking smallvec v0.6.7 [INFO] [stderr] Compiling memchr v2.1.2 [INFO] [stderr] Checking peek-nth v0.2.0 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking jack_compiler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:78:71 [INFO] [stdout] | [INFO] [stdout] 78 | Err(why) => panic!("couldn't create {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:83:73 [INFO] [stdout] | [INFO] [stdout] 83 | Err(why) => panic!("couldn't write to {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:78:71 [INFO] [stdout] | [INFO] [stdout] 78 | Err(why) => panic!("couldn't create {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:83:73 [INFO] [stdout] | [INFO] [stdout] 83 | Err(why) => panic!("couldn't write to {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let mut output_file_name = str::replace( [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let mut output_file_name = str::replace( [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [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 3.76s [INFO] running `Command { std: "docker" "inspect" "bf36f989b8d3677e83f5ecd6e158848d2c2a599821b50d15467684548eee0f1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bf36f989b8d3677e83f5ecd6e158848d2c2a599821b50d15467684548eee0f1c", kill_on_drop: false }` [INFO] [stdout] bf36f989b8d3677e83f5ecd6e158848d2c2a599821b50d15467684548eee0f1c [INFO] checking thomasfermi/JackCompiler against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomasfermi%2FJackCompiler" "/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/thomasfermi/JackCompiler 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 git repo https://github.com/thomasfermi/JackCompiler [INFO] finished tweaking git repo https://github.com/thomasfermi/JackCompiler [INFO] tweaked toml for git repo https://github.com/thomasfermi/JackCompiler written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/thomasfermi/JackCompiler 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-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 44e2cb2109f9f5e29773302bfe5dde3f031ff69e61dd89e25646064d5087fc9b [INFO] running `Command { std: "docker" "start" "-a" "44e2cb2109f9f5e29773302bfe5dde3f031ff69e61dd89e25646064d5087fc9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "44e2cb2109f9f5e29773302bfe5dde3f031ff69e61dd89e25646064d5087fc9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44e2cb2109f9f5e29773302bfe5dde3f031ff69e61dd89e25646064d5087fc9b", kill_on_drop: false }` [INFO] [stdout] 44e2cb2109f9f5e29773302bfe5dde3f031ff69e61dd89e25646064d5087fc9b [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 63804400eebbaa55c000020cb59a970e26c034359d37cd7bf79203bd287a751b [INFO] running `Command { std: "docker" "start" "-a" "63804400eebbaa55c000020cb59a970e26c034359d37cd7bf79203bd287a751b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.45 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Compiling regex v1.1.0 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking textwrap v0.10.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking smallvec v0.6.7 [INFO] [stderr] Checking regex-syntax v0.6.4 [INFO] [stderr] Compiling memchr v2.1.2 [INFO] [stderr] Checking peek-nth v0.2.0 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking jack_compiler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:78:71 [INFO] [stdout] | [INFO] [stdout] 78 | Err(why) => panic!("couldn't create {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:83:73 [INFO] [stdout] | [INFO] [stdout] 83 | Err(why) => panic!("couldn't write to {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:78:71 [INFO] [stdout] | [INFO] [stdout] 78 | Err(why) => panic!("couldn't create {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:83:73 [INFO] [stdout] | [INFO] [stdout] 83 | Err(why) => panic!("couldn't write to {}: {}", display, why.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let mut output_file_name = str::replace( [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let mut output_file_name = str::replace( [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [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 4.35s [INFO] running `Command { std: "docker" "inspect" "63804400eebbaa55c000020cb59a970e26c034359d37cd7bf79203bd287a751b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "63804400eebbaa55c000020cb59a970e26c034359d37cd7bf79203bd287a751b", kill_on_drop: false }` [INFO] [stdout] 63804400eebbaa55c000020cb59a970e26c034359d37cd7bf79203bd287a751b