[INFO] cloning repository https://github.com/bumblepie/advent-of-code-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bumblepie/advent-of-code-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbumblepie%2Fadvent-of-code-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbumblepie%2Fadvent-of-code-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70cd801481f5e287ae8e6bfcfc729d126655ed7c
[INFO] building bumblepie/advent-of-code-2019 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbumblepie%2Fadvent-of-code-2019" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bumblepie/advent-of-code-2019 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bumblepie/advent-of-code-2019
[INFO] finished tweaking git repo https://github.com/bumblepie/advent-of-code-2019
[INFO] tweaked toml for git repo https://github.com/bumblepie/advent-of-code-2019 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bumblepie/advent-of-code-2019 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gnuplot v0.0.32
[INFO] [stderr]   Downloaded z3-sys v0.5.0
[INFO] [stderr]   Downloaded z3 v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fbc8ea561ac9ffd54f066b1c1e014937bb6d42a5af7e01ff730e974ef77bb23
[INFO] running `Command { std: "docker" "start" "-a" "4fbc8ea561ac9ffd54f066b1c1e014937bb6d42a5af7e01ff730e974ef77bb23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fbc8ea561ac9ffd54f066b1c1e014937bb6d42a5af7e01ff730e974ef77bb23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fbc8ea561ac9ffd54f066b1c1e014937bb6d42a5af7e01ff730e974ef77bb23", kill_on_drop: false }`
[INFO] [stdout] 4fbc8ea561ac9ffd54f066b1c1e014937bb6d42a5af7e01ff730e974ef77bb23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 701e4cd93e2c1fb1ba502dc1139bdd7cf9e3f9e750bb33403e447043a210ab64
[INFO] running `Command { std: "docker" "start" "-a" "701e4cd93e2c1fb1ba502dc1139bdd7cf9e3f9e750bb33403e447043a210ab64", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling z3-sys v0.5.0
[INFO] [stderr]    Compiling day-1 v0.1.0 (/opt/rustwide/workdir/day-1)
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling z3 v0.4.0
[INFO] [stderr]    Compiling gnuplot v0.0.32
[INFO] [stderr]    Compiling day-3 v0.1.0 (/opt/rustwide/workdir/day-3)
[INFO] [stderr]    Compiling day-4 v0.1.0 (/opt/rustwide/workdir/day-4)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> day-4/src/main.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let solver = solver.clone();
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `z3::Solver<'_>` does not implement `Clone`, so calling `clone` on `&z3::Solver<'_>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 106 -     let solver = solver.clone();
[INFO] [stdout] 106 +     let solver = solver;
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `z3::Solver<'_>`, implement `Clone` for it
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/z3-0.4.0/src/lib.rs:91:1
[INFO] [stdout]     |
[INFO] [stdout] 91  + #[derive(Clone)]
[INFO] [stdout] 92  | pub struct Solver<'ctx> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling day-2 v0.1.0 (/opt/rustwide/workdir/day-2)
[INFO] [stdout] warning: function `graph` is never used
[INFO] [stdout]    --> day-2/src/main.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn graph(starting_state: &Vec<usize>) {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "701e4cd93e2c1fb1ba502dc1139bdd7cf9e3f9e750bb33403e447043a210ab64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "701e4cd93e2c1fb1ba502dc1139bdd7cf9e3f9e750bb33403e447043a210ab64", kill_on_drop: false }`
[INFO] [stdout] 701e4cd93e2c1fb1ba502dc1139bdd7cf9e3f9e750bb33403e447043a210ab64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94fc6c1da4ee0ca8f862b1b84822f98764c63254857b2de92413a4c24b06dc30
[INFO] running `Command { std: "docker" "start" "-a" "94fc6c1da4ee0ca8f862b1b84822f98764c63254857b2de92413a4c24b06dc30", kill_on_drop: false }`
[INFO] [stderr]    Compiling day-1 v0.1.0 (/opt/rustwide/workdir/day-1)
[INFO] [stderr]    Compiling day-3 v0.1.0 (/opt/rustwide/workdir/day-3)
[INFO] [stderr]    Compiling day-4 v0.1.0 (/opt/rustwide/workdir/day-4)
[INFO] [stderr]    Compiling day-2 v0.1.0 (/opt/rustwide/workdir/day-2)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> day-4/src/main.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let solver = solver.clone();
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `z3::Solver<'_>` does not implement `Clone`, so calling `clone` on `&z3::Solver<'_>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 106 -     let solver = solver.clone();
[INFO] [stdout] 106 +     let solver = solver;
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `z3::Solver<'_>`, implement `Clone` for it
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/z3-0.4.0/src/lib.rs:91:1
[INFO] [stdout]     |
[INFO] [stdout] 91  + #[derive(Clone)]
[INFO] [stdout] 92  | pub struct Solver<'ctx> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `graph` is never used
[INFO] [stdout]    --> day-2/src/main.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn graph(starting_state: &Vec<usize>) {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "94fc6c1da4ee0ca8f862b1b84822f98764c63254857b2de92413a4c24b06dc30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94fc6c1da4ee0ca8f862b1b84822f98764c63254857b2de92413a4c24b06dc30", kill_on_drop: false }`
[INFO] [stdout] 94fc6c1da4ee0ca8f862b1b84822f98764c63254857b2de92413a4c24b06dc30