[INFO] cloning repository https://github.com/jfredett/synacor [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jfredett/synacor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjfredett%2Fsynacor", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjfredett%2Fsynacor'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c913dcb7075022f423ac8e42bd1e0c16f5fd1ac7 [INFO] checking jfredett/synacor against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjfredett%2Fsynacor" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jfredett/synacor on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jfredett/synacor [INFO] finished tweaking git repo https://github.com/jfredett/synacor [INFO] tweaked toml for git repo https://github.com/jfredett/synacor written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/jfredett/synacor already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] ab1d6dd8e000d6dde4b123b786a6a830d746e29bfe949e67e226d2bedadb0425 [INFO] running `Command { std: "docker" "start" "-a" "ab1d6dd8e000d6dde4b123b786a6a830d746e29bfe949e67e226d2bedadb0425", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ab1d6dd8e000d6dde4b123b786a6a830d746e29bfe949e67e226d2bedadb0425", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab1d6dd8e000d6dde4b123b786a6a830d746e29bfe949e67e226d2bedadb0425", kill_on_drop: false }` [INFO] [stdout] ab1d6dd8e000d6dde4b123b786a6a830d746e29bfe949e67e226d2bedadb0425 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4d91a0274890d3dfdc832c0e28aa4ff6ab7dea7d4e43aa1a4beb0851dae3fc13 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4d91a0274890d3dfdc832c0e28aa4ff6ab7dea7d4e43aa1a4beb0851dae3fc13", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.34 [INFO] [stderr] Checking ansi_term v0.10.2 [INFO] [stderr] Checking vec_map v0.8.0 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Checking atty v0.2.3 [INFO] [stderr] Checking clap v2.29.0 [INFO] [stderr] Checking synacor v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated associated function `core::str::::trim_left_matches`: superseded by `trim_start_matches` [INFO] [stdout] --> src/address.rs:45:41 [INFO] [stdout] | [INFO] [stdout] 45 | let v_res = u16::from_str(s.trim_left_matches("@")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(try_from, const_fn)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/vm.rs:186:9 [INFO] [stdout] | [INFO] [stdout] 186 | stdin.read_exact(&mut buf); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated associated function `core::str::::trim_left_matches`: superseded by `trim_start_matches` [INFO] [stdout] --> src/address.rs:45:41 [INFO] [stdout] | [INFO] [stdout] 45 | let v_res = u16::from_str(s.trim_left_matches("@")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(try_from, const_fn)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/u15.rs:163:30 [INFO] [stdout] | [INFO] [stdout] 163 | fn sub_underflow() { u15(0) - u15(2); } [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/u15.rs:167:28 [INFO] [stdout] | [INFO] [stdout] 167 | fn div_by_zero() { u15(1) / u15(0); } [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/u15.rs:223:26 [INFO] [stdout] | [INFO] [stdout] 223 | fn sub_panic() { u15(16) - u15(17); } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/vm.rs:186:9 [INFO] [stdout] | [INFO] [stdout] 186 | stdin.read_exact(&mut buf); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 12.34s [INFO] running `Command { std: "docker" "inspect" "4d91a0274890d3dfdc832c0e28aa4ff6ab7dea7d4e43aa1a4beb0851dae3fc13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d91a0274890d3dfdc832c0e28aa4ff6ab7dea7d4e43aa1a4beb0851dae3fc13", kill_on_drop: false }` [INFO] [stdout] 4d91a0274890d3dfdc832c0e28aa4ff6ab7dea7d4e43aa1a4beb0851dae3fc13