[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] testing willbeason/diffeq against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fdiffeq" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/willbeason/diffeq on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "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-3-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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b17649cdf445566f4e8783f5014ebceb753ece696a1d94e74f61f0d59e32b7fc
[INFO] running `Command { std: "docker" "start" "-a" "b17649cdf445566f4e8783f5014ebceb753ece696a1d94e74f61f0d59e32b7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b17649cdf445566f4e8783f5014ebceb753ece696a1d94e74f61f0d59e32b7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b17649cdf445566f4e8783f5014ebceb753ece696a1d94e74f61f0d59e32b7fc", kill_on_drop: false }`
[INFO] [stdout] b17649cdf445566f4e8783f5014ebceb753ece696a1d94e74f61f0d59e32b7fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abe3b00e8d6f4ccadfbe493f4b30e8193493d3605f4e4cfdc61d0425a4d17cc7
[INFO] running `Command { std: "docker" "start" "-a" "abe3b00e8d6f4ccadfbe493f4b30e8193493d3605f4e4cfdc61d0425a4d17cc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "abe3b00e8d6f4ccadfbe493f4b30e8193493d3605f4e4cfdc61d0425a4d17cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abe3b00e8d6f4ccadfbe493f4b30e8193493d3605f4e4cfdc61d0425a4d17cc7", kill_on_drop: false }`
[INFO] [stdout] abe3b00e8d6f4ccadfbe493f4b30e8193493d3605f4e4cfdc61d0425a4d17cc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 327f764538b47b040ac6c54c7e129d85a88eba675cf2511d37fa5c07b91aba98
[INFO] running `Command { std: "docker" "start" "-a" "327f764538b47b040ac6c54c7e129d85a88eba675cf2511d37fa5c07b91aba98", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "327f764538b47b040ac6c54c7e129d85a88eba675cf2511d37fa5c07b91aba98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "327f764538b47b040ac6c54c7e129d85a88eba675cf2511d37fa5c07b91aba98", kill_on_drop: false }`
[INFO] [stdout] 327f764538b47b040ac6c54c7e129d85a88eba675cf2511d37fa5c07b91aba98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 77652c58f99b805cb5c533ac02675532e4d1de727bd98fcf35e069d8ac40017f
[INFO] running `Command { std: "docker" "start" "-a" "77652c58f99b805cb5c533ac02675532e4d1de727bd98fcf35e069d8ac40017f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `eq`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let eq = equations::O1 {
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `f` is never read
[INFO] [stderr]  --> src/equations.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct O1 {
[INFO] [stderr]   |            -- field in this struct
[INFO] [stderr] 2 |     pub f: fn(p: (f64, f64)) -> f64
[INFO] [stderr]   |         ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `euler` and `rk4` are never used
[INFO] [stderr]   --> src/equations.rs:6:12
[INFO] [stderr]    |
[INFO] [stderr] 5  | impl O1 {
[INFO] [stderr]    | ------- methods in this implementation
[INFO] [stderr] 6  |     pub fn euler(self, p: (f64, f64), h: f64) -> f64 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 11 |     pub fn rk4(self, p: (f64, f64), h: f64) -> f64 {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `O3` is never constructed
[INFO] [stderr]   --> src/equations.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub struct O3 {
[INFO] [stderr]    |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `euler` is never used
[INFO] [stderr]   --> src/equations.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl O3 {
[INFO] [stderr]    | ------- method in this implementation
[INFO] [stderr] 34 |     pub fn euler(self, p: (f64, f64, f64, f64), h: f64) -> (f64, f64, f64) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `diffeq` (bin "diffeq" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/diffeq-55ab039ede6339f7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "77652c58f99b805cb5c533ac02675532e4d1de727bd98fcf35e069d8ac40017f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77652c58f99b805cb5c533ac02675532e4d1de727bd98fcf35e069d8ac40017f", kill_on_drop: false }`
[INFO] [stdout] 77652c58f99b805cb5c533ac02675532e4d1de727bd98fcf35e069d8ac40017f