[INFO] fetching crate zdd 0.3.0...
[INFO] testing zdd-0.3.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate zdd 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate zdd 0.3.0
[INFO] finished tweaking crates.io crate zdd 0.3.0
[INFO] tweaked toml for crates.io crate zdd 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zdd 0.3.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hashconsing v1.6.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89d6f5fba5fd73e68a0664cad71685f54c8830f1f78992381f58be49b7a446f1
[INFO] running `Command { std: "docker" "start" "-a" "89d6f5fba5fd73e68a0664cad71685f54c8830f1f78992381f58be49b7a446f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89d6f5fba5fd73e68a0664cad71685f54c8830f1f78992381f58be49b7a446f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d6f5fba5fd73e68a0664cad71685f54c8830f1f78992381f58be49b7a446f1", kill_on_drop: false }`
[INFO] [stdout] 89d6f5fba5fd73e68a0664cad71685f54c8830f1f78992381f58be49b7a446f1
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e495a758c5ee74927c37af140e07d6e714bcbfb141028e0ae6b73d9daa6f9f8b
[INFO] running `Command { std: "docker" "start" "-a" "e495a758c5ee74927c37af140e07d6e714bcbfb141028e0ae6b73d9daa6f9f8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling hashconsing v1.6.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling zdd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:187:53
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` 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] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:203:53
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:212:44
[INFO] [stdout]     |
[INFO] [stdout] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.81s
[INFO] running `Command { std: "docker" "inspect" "e495a758c5ee74927c37af140e07d6e714bcbfb141028e0ae6b73d9daa6f9f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e495a758c5ee74927c37af140e07d6e714bcbfb141028e0ae6b73d9daa6f9f8b", kill_on_drop: false }`
[INFO] [stdout] e495a758c5ee74927c37af140e07d6e714bcbfb141028e0ae6b73d9daa6f9f8b
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6913af2b06c61d5eb27d1efc28fc6d507ee743e56764dbd29ad8256dbe1fc5fc
[INFO] running `Command { std: "docker" "start" "-a" "6913af2b06c61d5eb27d1efc28fc6d507ee743e56764dbd29ad8256dbe1fc5fc", kill_on_drop: false }`
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:187:53
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` 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] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zdd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:203:53
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:212:44
[INFO] [stdout]     |
[INFO] [stdout] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:187:53
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` 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] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:203:53
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:212:44
[INFO] [stdout]     |
[INFO] [stdout] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "6913af2b06c61d5eb27d1efc28fc6d507ee743e56764dbd29ad8256dbe1fc5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6913af2b06c61d5eb27d1efc28fc6d507ee743e56764dbd29ad8256dbe1fc5fc", kill_on_drop: false }`
[INFO] [stdout] 6913af2b06c61d5eb27d1efc28fc6d507ee743e56764dbd29ad8256dbe1fc5fc
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2e5cf0fbbacf02c2b894ffa0198b798a14da35c9ead0d6f4d3a5f9868e3ba35c
[INFO] running `Command { std: "docker" "start" "-a" "2e5cf0fbbacf02c2b894ffa0198b798a14da35c9ead0d6f4d3a5f9868e3ba35c", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:187:53
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:195:53
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:203:53
[INFO] [stderr]     |
[INFO] [stderr] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:212:44
[INFO] [stderr]     |
[INFO] [stderr] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stderr] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `zdd` (lib) generated 5 warnings (run `cargo fix --lib -p zdd` to apply 4 suggestions)
[INFO] [stderr] warning: `zdd` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zdd-b3e16ac768eed5ed)
[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] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-31e429ececf7419e)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test thirteen_times_100 ... ok
[INFO] [stdout] test three_times_1000000 ... FAILED
[INFO] [stderr] error: test failed, to rerun pass `--test lib`
[INFO] [stdout] test seven_times_10000 ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- three_times_1000000 stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'three_times_1000000' panicked at tests/lib.rs:345:27:
[INFO] [stdout] Read-only file system (os error 30)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59a668ba6f32 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59a668ba6f32 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59a668ba6f32 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x59a668ba6f32 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x59a668bcca23 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x59a668bcca23 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x59a668ba3eb3 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x59a668ba3eb3 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x59a668ba6d82 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x59a668ba84b9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x59a668ba82ee - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x59a668b39ab4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x59a668b39ab4 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59a668ba8f8e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x59a668ba8f8e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x59a668ba8c5a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x59a668ba7439 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x59a668ba88ed - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x59a668bcb470 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x59a668afa1b0 - core::panicking::panic_display::h655312568545e63a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:268:5
[INFO] [stdout]   20:     0x59a668aedce4 - lib::run::h4cc0c2a0c0b8a10a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lib.rs:345:27
[INFO] [stdout]   21:     0x59a668aee235 - lib::three_times_1000000::h2c3183f1d1c167b5
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lib.rs:375:15
[INFO] [stdout]   22:     0x59a668aee127 - lib::three_times_1000000::{{closure}}::h7926bda4438e4ab1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lib.rs:371:25
[INFO] [stdout]   23:     0x59a668ae7ec6 - core::ops::function::FnOnce::call_once::h3afe5a2c6444b7a1
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x59a668b3f31b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x59a668b3f31b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x59a668b3e455 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x59a668b3e455 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x59a668b3e455 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x59a668b3e455 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x59a668b3e455 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x59a668b3e455 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x59a668b3e455 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x59a668b02054 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x59a668b02054 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x59a668b05a2a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x59a668b05a2a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x59a668b05a2a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x59a668b05a2a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x59a668b05a2a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x59a668b05a2a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x59a668b05a2a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x59a668babf0f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x59a668babf0f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   44:     0x7d957b7cfaa4 - <unknown>
[INFO] [stdout]   45:     0x7d957b85ca34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     three_times_1000000
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.71s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2e5cf0fbbacf02c2b894ffa0198b798a14da35c9ead0d6f4d3a5f9868e3ba35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e5cf0fbbacf02c2b894ffa0198b798a14da35c9ead0d6f4d3a5f9868e3ba35c", kill_on_drop: false }`
[INFO] [stdout] 2e5cf0fbbacf02c2b894ffa0198b798a14da35c9ead0d6f4d3a5f9868e3ba35c
