[INFO] cloning repository https://github.com/learningstud/calc-rust
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5740bf1723f4def1bcd2bb76ece3635eceb2b912
[INFO] checking learningstud/calc-rust against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121545
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flearningstud%2Fcalc-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] crate git repo https://github.com/learningstud/calc-rust 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" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] checking learningstud/calc-rust against try#7ee76453dd3eae6de6c1351f26482bed63b01beb for pr-121545
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flearningstud%2Fcalc-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/learningstud/calc-rust on toolchain 7ee76453dd3eae6de6c1351f26482bed63b01beb
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[INFO] started tweaking git repo https://github.com/learningstud/calc-rust
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[INFO] tweaked toml for git repo https://github.com/learningstud/calc-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/learningstud/calc-rust 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" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d75cc4f852a4f3527e9238138c8ae2d09a6b52e1491fac8fede2ddb74122b876
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[INFO] running `Command { std: "docker" "rm" "-f" "d75cc4f852a4f3527e9238138c8ae2d09a6b52e1491fac8fede2ddb74122b876", kill_on_drop: false }`
[INFO] [stdout] d75cc4f852a4f3527e9238138c8ae2d09a6b52e1491fac8fede2ddb74122b876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 590eb65784dab2a56029f22401b6629ba4406315fbf301f5bdee83c46c53ef99
[INFO] running `Command { std: "docker" "start" "-a" "590eb65784dab2a56029f22401b6629ba4406315fbf301f5bdee83c46c53ef99", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking calc-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Context` is never constructed
[INFO] [stdout]  --> src/itt/kernel.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Context;
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Term` is never used
[INFO] [stdout]  --> src/itt/kernel.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Term<Type: Term<Universe>> {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Universe` is never constructed
[INFO] [stdout]  --> src/itt/kernel/universe.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Universe(usize);
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `level`, `succ`, `max`, and `imax` are never used
[INFO] [stdout]   --> src/itt/kernel/universe.rs:3:8
[INFO] [stdout]    |
[INFO] [stdout] 2  | impl Universe {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 3  |     fn level(&self) -> usize {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 6  |     fn succ(&self) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9  |     fn max(u: &Universe, v: &Universe) -> Universe {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn imax(u: &Universe, v: &Universe) -> Universe {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Judgement` is never used
[INFO] [stdout]   --> src/itt/kernel2.rs:91:6
[INFO] [stdout]    |
[INFO] [stdout] 91 | enum Judgement<'a> {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Equality` is never constructed
[INFO] [stdout]    --> src/itt/kernel2.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct Equality(Term, Term, Type);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:286:48
[INFO] [stdout]     |
[INFO] [stdout] 286 | ...                   new.right.push(term.clone());
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:296:59
[INFO] [stdout]     |
[INFO] [stdout] 296 | ...                   new.left[index] = left.clone();
[INFO] [stdout]     |                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:301:60
[INFO] [stdout]     |
[INFO] [stdout] 301 | ...                   new.left[index] = right.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:311:51
[INFO] [stdout]     |
[INFO] [stdout] 311 | ...                   new.left[index] = left.clone();
[INFO] [stdout]     |                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:316:52
[INFO] [stdout]     |
[INFO] [stdout] 316 | ...                   new.left[index] = right.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:351:47
[INFO] [stdout]     |
[INFO] [stdout] 351 | ...                   new.left.push(term.clone());
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:361:60
[INFO] [stdout]     |
[INFO] [stdout] 361 | ...                   new.right[index] = left.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:366:61
[INFO] [stdout]     |
[INFO] [stdout] 366 | ...                   new.right[index] = right.clone();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:376:52
[INFO] [stdout]     |
[INFO] [stdout] 376 | ...                   new.right[index] = left.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:381:53
[INFO] [stdout]     |
[INFO] [stdout] 381 | ...                   new.right[index] = right.clone();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:389:47
[INFO] [stdout]     |
[INFO] [stdout] 389 | ...                   new.left.push(left.clone());
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:390:53
[INFO] [stdout]     |
[INFO] [stdout] 390 | ...                   new.right[index] = right.clone();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Context` is never constructed
[INFO] [stdout]  --> src/itt/kernel.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Context;
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Term` is never used
[INFO] [stdout]  --> src/itt/kernel.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Term<Type: Term<Universe>> {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Universe` is never constructed
[INFO] [stdout]  --> src/itt/kernel/universe.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Universe(usize);
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `level`, `succ`, `max`, and `imax` are never used
[INFO] [stdout]   --> src/itt/kernel/universe.rs:3:8
[INFO] [stdout]    |
[INFO] [stdout] 2  | impl Universe {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 3  |     fn level(&self) -> usize {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 6  |     fn succ(&self) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9  |     fn max(u: &Universe, v: &Universe) -> Universe {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn imax(u: &Universe, v: &Universe) -> Universe {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Judgement` is never used
[INFO] [stdout]   --> src/itt/kernel2.rs:91:6
[INFO] [stdout]    |
[INFO] [stdout] 91 | enum Judgement<'a> {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Equality` is never constructed
[INFO] [stdout]    --> src/itt/kernel2.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct Equality(Term, Term, Type);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:286:48
[INFO] [stdout]     |
[INFO] [stdout] 286 | ...                   new.right.push(term.clone());
[INFO] [stdout]     |                                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:296:59
[INFO] [stdout]     |
[INFO] [stdout] 296 | ...                   new.left[index] = left.clone();
[INFO] [stdout]     |                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:301:60
[INFO] [stdout]     |
[INFO] [stdout] 301 | ...                   new.left[index] = right.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:311:51
[INFO] [stdout]     |
[INFO] [stdout] 311 | ...                   new.left[index] = left.clone();
[INFO] [stdout]     |                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:316:52
[INFO] [stdout]     |
[INFO] [stdout] 316 | ...                   new.left[index] = right.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:351:47
[INFO] [stdout]     |
[INFO] [stdout] 351 | ...                   new.left.push(term.clone());
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:361:60
[INFO] [stdout]     |
[INFO] [stdout] 361 | ...                   new.right[index] = left.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:366:61
[INFO] [stdout]     |
[INFO] [stdout] 366 | ...                   new.right[index] = right.clone();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:376:52
[INFO] [stdout]     |
[INFO] [stdout] 376 | ...                   new.right[index] = left.clone();
[INFO] [stdout]     |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:381:53
[INFO] [stdout]     |
[INFO] [stdout] 381 | ...                   new.right[index] = right.clone();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:389:47
[INFO] [stdout]     |
[INFO] [stdout] 389 | ...                   new.left.push(left.clone());
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&kernel::Term<'_>` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:390:53
[INFO] [stdout]     |
[INFO] [stdout] 390 | ...                   new.right[index] = right.clone();
[INFO] [stdout]     |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `Command { std: "docker" "inspect" "590eb65784dab2a56029f22401b6629ba4406315fbf301f5bdee83c46c53ef99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590eb65784dab2a56029f22401b6629ba4406315fbf301f5bdee83c46c53ef99", kill_on_drop: false }`
[INFO] [stdout] 590eb65784dab2a56029f22401b6629ba4406315fbf301f5bdee83c46c53ef99