[INFO] cloning repository https://github.com/willbeason/diffeq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willbeason/diffeq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fdiffeq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fdiffeq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad709ab1f26862124d7698e85ed550e0b1a22faa
[INFO] checking willbeason/diffeq against master#9d28fe39763974a96d61232e96ac856735e4cdd6 for pr-139624
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fdiffeq" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/willbeason/diffeq on toolchain 9d28fe39763974a96d61232e96ac856735e4cdd6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/willbeason/diffeq
[INFO] finished tweaking git repo https://github.com/willbeason/diffeq
[INFO] tweaked toml for git repo https://github.com/willbeason/diffeq written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/willbeason/diffeq 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" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbb00af9a29a2b0d1c3f38e71d197d122b89b9c2c26f2e0a0078892935001d3f
[INFO] running `Command { std: "docker" "start" "-a" "cbb00af9a29a2b0d1c3f38e71d197d122b89b9c2c26f2e0a0078892935001d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbb00af9a29a2b0d1c3f38e71d197d122b89b9c2c26f2e0a0078892935001d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbb00af9a29a2b0d1c3f38e71d197d122b89b9c2c26f2e0a0078892935001d3f", kill_on_drop: false }`
[INFO] [stdout] cbb00af9a29a2b0d1c3f38e71d197d122b89b9c2c26f2e0a0078892935001d3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5213ef47f4f8b69d3d282c3dd8bc0662b802fc686d9c670d38f8eedcddb60aa9
[INFO] running `Command { std: "docker" "start" "-a" "5213ef47f4f8b69d3d282c3dd8bc0662b802fc686d9c670d38f8eedcddb60aa9", kill_on_drop: false }`
[INFO] [stderr]     Checking diffeq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `eq`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let eq = equations::O1 {
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `f` is never read
[INFO] [stdout]  --> src/equations.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct O1 {
[INFO] [stdout]   |            -- field in this struct
[INFO] [stdout] 2 |     pub f: fn(p: (f64, f64)) -> f64
[INFO] [stdout]   |         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `euler` and `rk4` are never used
[INFO] [stdout]   --> src/equations.rs:6:12
[INFO] [stdout]    |
[INFO] [stdout] 5  | impl O1 {
[INFO] [stdout]    | ------- methods in this implementation
[INFO] [stdout] 6  |     pub fn euler(self, p: (f64, f64), h: f64) -> f64 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn rk4(self, p: (f64, f64), h: f64) -> f64 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `O3` is never constructed
[INFO] [stdout]   --> src/equations.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct O3 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `euler` is never used
[INFO] [stdout]   --> src/equations.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl O3 {
[INFO] [stdout]    | ------- method in this implementation
[INFO] [stdout] 34 |     pub fn euler(self, p: (f64, f64, f64, f64), h: f64) -> (f64, f64, f64) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eq`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let eq = equations::O1 {
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `f` is never read
[INFO] [stdout]  --> src/equations.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct O1 {
[INFO] [stdout]   |            -- field in this struct
[INFO] [stdout] 2 |     pub f: fn(p: (f64, f64)) -> f64
[INFO] [stdout]   |         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `euler` and `rk4` are never used
[INFO] [stdout]   --> src/equations.rs:6:12
[INFO] [stdout]    |
[INFO] [stdout] 5  | impl O1 {
[INFO] [stdout]    | ------- methods in this implementation
[INFO] [stdout] 6  |     pub fn euler(self, p: (f64, f64), h: f64) -> f64 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn rk4(self, p: (f64, f64), h: f64) -> f64 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `O3` is never constructed
[INFO] [stdout]   --> src/equations.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct O3 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `euler` is never used
[INFO] [stdout]   --> src/equations.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl O3 {
[INFO] [stdout]    | ------- method in this implementation
[INFO] [stdout] 34 |     pub fn euler(self, p: (f64, f64, f64, f64), h: f64) -> (f64, f64, f64) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "5213ef47f4f8b69d3d282c3dd8bc0662b802fc686d9c670d38f8eedcddb60aa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5213ef47f4f8b69d3d282c3dd8bc0662b802fc686d9c670d38f8eedcddb60aa9", kill_on_drop: false }`
[INFO] [stdout] 5213ef47f4f8b69d3d282c3dd8bc0662b802fc686d9c670d38f8eedcddb60aa9