[INFO] fetching crate razor-chase 0.1.0... [INFO] checking razor-chase-0.1.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] extracting crate razor-chase 0.1.0 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate razor-chase 0.1.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate razor-chase 0.1.0 [INFO] finished tweaking crates.io crate razor-chase 0.1.0 [INFO] tweaked toml for crates.io crate razor-chase 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 90 packages [INFO] [stderr] Adding autocfg v0.1.8 (latest: v1.2.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding bytecount v0.3.2 (latest: v0.6.7) [INFO] [stderr] Adding cast v0.1.0 (latest: v0.3.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding clap v2.34.0 (latest: v4.5.4) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding criterion v0.1.2 (latest: v0.5.1) [INFO] [stderr] Adding criterion-plot v0.1.3 (latest: v0.5.0) [INFO] [stderr] Adding criterion-stats v0.1.3 (latest: v0.3.0) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding isatty v0.1.9 (latest: v0.2.0) [INFO] [stderr] Adding itertools v0.4.19 (latest: v0.12.1) [INFO] [stderr] Adding itertools v0.5.10 (latest: v0.12.1) [INFO] [stderr] Adding itertools v0.7.11 (latest: v0.12.1) [INFO] [stderr] Adding log v0.3.9 (latest: v0.4.21) [INFO] [stderr] Adding nom v4.2.3 (latest: v7.1.3) [INFO] [stderr] Adding nom_locate v0.3.1 (latest: v4.2.0) [INFO] [stderr] Adding num-traits v0.1.43 (latest: v0.2.18) [INFO] [stderr] Adding num_cpus v0.2.13 (latest: v1.16.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding rand v0.3.23 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.4.6 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.6.5 (latest: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rand_hc v0.1.0 (latest: v0.3.2) [INFO] [stderr] Adding rand_isaac v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rand_jitter v0.1.4 (latest: v0.4.0) [INFO] [stderr] Adding rand_os v0.1.3 (latest: v0.2.2) [INFO] [stderr] Adding rand_pcg v0.1.2 (latest: v0.3.1) [INFO] [stderr] Adding rand_xorshift v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding redox_syscall v0.1.57 (latest: v0.5.1) [INFO] [stderr] Adding simplelog v0.4.4 (latest: v0.12.2) [INFO] [stderr] Adding strsim v0.8.0 (latest: v0.11.0) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.57) [INFO] [stderr] Adding synstructure v0.12.6 (latest: v0.13.1) [INFO] [stderr] Adding term v0.4.6 (latest: v0.7.0) [INFO] [stderr] Adding textwrap v0.11.0 (latest: v0.16.1) [INFO] [stderr] Adding time v0.1.45 (latest: v0.3.34) [INFO] [stderr] Adding version_check v0.1.5 (latest: v0.9.4) [INFO] [stderr] Adding wasi v0.10.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [INFO] [stderr] Adding winapi v0.2.8 (latest: v0.3.9) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bytecount v0.3.2 [INFO] [stderr] Downloaded thread-scoped v1.0.2 [INFO] [stderr] Downloaded criterion-stats v0.1.3 [INFO] [stderr] Downloaded cast v0.1.0 [INFO] [stderr] Downloaded criterion v0.1.2 [INFO] [stderr] Downloaded itertools v0.5.10 [INFO] [stderr] Downloaded criterion-plot v0.1.3 [INFO] [stderr] Downloaded nom_locate v0.3.1 [INFO] [stderr] Downloaded simplelog v0.4.4 [INFO] [stderr] Downloaded razor-fol v0.1.0 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 99e71f3960765c1c5917bd5cbc7140e6e48222f622f28a69b3f0ec0bacc6365f [INFO] running `Command { std: "docker" "start" "-a" "99e71f3960765c1c5917bd5cbc7140e6e48222f622f28a69b3f0ec0bacc6365f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "99e71f3960765c1c5917bd5cbc7140e6e48222f622f28a69b3f0ec0bacc6365f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99e71f3960765c1c5917bd5cbc7140e6e48222f622f28a69b3f0ec0bacc6365f", kill_on_drop: false }` [INFO] [stdout] 99e71f3960765c1c5917bd5cbc7140e6e48222f622f28a69b3f0ec0bacc6365f [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" "-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 52ea64350c4b45eb3f311865900ac7a248720f0e35712778c59d1c7633891edd [INFO] running `Command { std: "docker" "start" "-a" "52ea64350c4b45eb3f311865900ac7a248720f0e35712778c59d1c7633891edd", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Checking either v1.10.0 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling syn v2.0.57 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Compiling nom v4.2.3 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking cast v0.1.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking itertools v0.5.10 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking num_cpus v0.2.13 [INFO] [stderr] Checking bytecount v0.3.2 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking thread-scoped v1.0.2 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking term v0.4.6 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking nom_locate v0.3.1 [INFO] [stderr] Checking simplelog v0.4.4 [INFO] [stderr] Checking criterion-plot v0.1.3 [INFO] [stderr] Checking tracing-core v0.1.32 [INFO] [stderr] Checking criterion-stats v0.1.3 [INFO] [stderr] Checking isatty v0.1.9 [INFO] [stderr] Checking itertools v0.7.11 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking razor-fol v0.1.0 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking criterion v0.1.2 [INFO] [stderr] Checking razor-chase v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `fmt` is imported redundantly [INFO] [stdout] --> src/chase/impl/basic.rs:12:44 [INFO] [stdout] | [INFO] [stdout] 10 | use crate::chase::*; [INFO] [stdout] | --------------- the item `fmt` is already imported here [INFO] [stdout] 11 | use razor_fol::syntax::*; [INFO] [stdout] 12 | use std::{collections::{HashMap, HashSet}, fmt, iter}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Either` is imported redundantly [INFO] [stdout] --> src/chase/impl/basic.rs:13:17 [INFO] [stdout] | [INFO] [stdout] 10 | use crate::chase::*; [INFO] [stdout] | --------------- the item `Either` is already imported here [INFO] [stdout] ... [INFO] [stdout] 13 | use itertools::{Either, Itertools}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tracing` is imported redundantly [INFO] [stdout] --> src/chase.rs:131:5 [INFO] [stdout] | [INFO] [stdout] 131 | use tracing; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:18:1 [INFO] [stdout] | [INFO] [stdout] 18 | extern crate tracing; [INFO] [stdout] | --------------------- the item `tracing` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `fmt` is imported redundantly [INFO] [stdout] --> src/chase/impl/basic.rs:12:44 [INFO] [stdout] | [INFO] [stdout] 10 | use crate::chase::*; [INFO] [stdout] | --------------- the item `fmt` is already imported here [INFO] [stdout] 11 | use razor_fol::syntax::*; [INFO] [stdout] 12 | use std::{collections::{HashMap, HashSet}, fmt, iter}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Either` is imported redundantly [INFO] [stdout] --> src/chase/impl/basic.rs:13:17 [INFO] [stdout] | [INFO] [stdout] 10 | use crate::chase::*; [INFO] [stdout] | --------------- the item `Either` is already imported here [INFO] [stdout] ... [INFO] [stdout] 13 | use itertools::{Either, Itertools}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tracing` is imported redundantly [INFO] [stdout] --> src/chase.rs:131:5 [INFO] [stdout] | [INFO] [stdout] 131 | use tracing; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:18:1 [INFO] [stdout] | [INFO] [stdout] 18 | extern crate tracing; [INFO] [stdout] | --------------------- the item `tracing` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: non-binding let on a synchronization lock [INFO] [stdout] --> src/trace/subscriber.rs:42:25 [INFO] [stdout] | [INFO] [stdout] 42 | let _ = self.chase_step_record [INFO] [stdout] | ^ this lock is not assigned to a binding and is immediately dropped [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(let_underscore_lock)]` on by default [INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 42 | let _unused = self.chase_step_record [INFO] [stdout] | ~~~~~~~ [INFO] [stdout] help: consider immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 42 ~ drop(self.chase_step_record [INFO] [stdout] 43 | .lock() [INFO] [stdout] ... [INFO] [stdout] 46 | rec [INFO] [stdout] 47 ~ })); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: non-binding let on a synchronization lock [INFO] [stdout] --> src/trace/subscriber.rs:52:25 [INFO] [stdout] | [INFO] [stdout] 52 | let _ = self.chase_step_record [INFO] [stdout] | ^ this lock is not assigned to a binding and is immediately dropped [INFO] [stdout] | [INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 52 | let _unused = self.chase_step_record [INFO] [stdout] | ~~~~~~~ [INFO] [stdout] help: consider immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 52 ~ drop(self.chase_step_record [INFO] [stdout] 53 | .lock() [INFO] [stdout] ... [INFO] [stdout] 56 | rec [INFO] [stdout] 57 ~ })); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `razor-chase` (lib) due to 3 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:939:9 [INFO] [stdout] | [INFO] [stdout] 939 | Sequent::from(&"true".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 939 | let _ = Sequent::from(&"true".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:945:9 [INFO] [stdout] | [INFO] [stdout] 945 | Sequent::from(&"false".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 945 | let _ = Sequent::from(&"false".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:951:9 [INFO] [stdout] | [INFO] [stdout] 951 | Sequent::from(&"false -> true".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 951 | let _ = Sequent::from(&"false -> true".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:957:9 [INFO] [stdout] | [INFO] [stdout] 957 | Sequent::from(&"(P(x) | Q(x)) -> R(x)".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 957 | let _ = Sequent::from(&"(P(x) | Q(x)) -> R(x)".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:963:9 [INFO] [stdout] | [INFO] [stdout] 963 | Sequent::from(&"P(x) -> R(x) & (Q(z) | R(z))".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 963 | let _ = Sequent::from(&"P(x) -> R(x) & (Q(z) | R(z))".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:969:9 [INFO] [stdout] | [INFO] [stdout] 969 | Sequent::from(&"P(x) -> ?x. Q(x)".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 969 | let _ = Sequent::from(&"P(x) -> ?x. Q(x)".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:975:9 [INFO] [stdout] | [INFO] [stdout] 975 | Sequent::from(&"?x.Q(x) -> P(x)".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 975 | let _ = Sequent::from(&"?x.Q(x) -> P(x)".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:981:9 [INFO] [stdout] | [INFO] [stdout] 981 | Sequent::from(&"true -> ~false".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 981 | let _ = Sequent::from(&"true -> ~false".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:987:9 [INFO] [stdout] | [INFO] [stdout] 987 | Sequent::from(&"true -> ~true".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 987 | let _ = Sequent::from(&"true -> ~true".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::convert::From::from` that must be used [INFO] [stdout] --> src/chase/impl/basic.rs:993:9 [INFO] [stdout] | [INFO] [stdout] 993 | Sequent::from(&"~P(x) -> ~Q(x)".parse().unwrap()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 993 | let _ = Sequent::from(&"~P(x) -> ~Q(x)".parse().unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: non-binding let on a synchronization lock [INFO] [stdout] --> src/trace/subscriber.rs:42:25 [INFO] [stdout] | [INFO] [stdout] 42 | let _ = self.chase_step_record [INFO] [stdout] | ^ this lock is not assigned to a binding and is immediately dropped [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(let_underscore_lock)]` on by default [INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 42 | let _unused = self.chase_step_record [INFO] [stdout] | ~~~~~~~ [INFO] [stdout] help: consider immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 42 ~ drop(self.chase_step_record [INFO] [stdout] 43 | .lock() [INFO] [stdout] ... [INFO] [stdout] 46 | rec [INFO] [stdout] 47 ~ })); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: non-binding let on a synchronization lock [INFO] [stdout] --> src/trace/subscriber.rs:52:25 [INFO] [stdout] | [INFO] [stdout] 52 | let _ = self.chase_step_record [INFO] [stdout] | ^ this lock is not assigned to a binding and is immediately dropped [INFO] [stdout] | [INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 52 | let _unused = self.chase_step_record [INFO] [stdout] | ~~~~~~~ [INFO] [stdout] help: consider immediately dropping the value [INFO] [stdout] | [INFO] [stdout] 52 ~ drop(self.chase_step_record [INFO] [stdout] 53 | .lock() [INFO] [stdout] ... [INFO] [stdout] 56 | rec [INFO] [stdout] 57 ~ })); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `razor-chase` (lib test) due to 3 previous errors; 13 warnings emitted [INFO] running `Command { std: "docker" "inspect" "52ea64350c4b45eb3f311865900ac7a248720f0e35712778c59d1c7633891edd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "52ea64350c4b45eb3f311865900ac7a248720f0e35712778c59d1c7633891edd", kill_on_drop: false }` [INFO] [stdout] 52ea64350c4b45eb3f311865900ac7a248720f0e35712778c59d1c7633891edd [INFO] checking razor-chase-0.1.0 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-3 [INFO] extracting crate razor-chase 0.1.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate razor-chase 0.1.0 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate razor-chase 0.1.0 [INFO] finished tweaking crates.io crate razor-chase 0.1.0 [INFO] tweaked toml for crates.io crate razor-chase 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4420cc08f7b47bc5b2e992a4254fa1768b7935802a6e5754044a8e60a9d50b70 [INFO] running `Command { std: "docker" "start" "-a" "4420cc08f7b47bc5b2e992a4254fa1768b7935802a6e5754044a8e60a9d50b70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4420cc08f7b47bc5b2e992a4254fa1768b7935802a6e5754044a8e60a9d50b70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4420cc08f7b47bc5b2e992a4254fa1768b7935802a6e5754044a8e60a9d50b70", kill_on_drop: false }` [INFO] [stdout] 4420cc08f7b47bc5b2e992a4254fa1768b7935802a6e5754044a8e60a9d50b70 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c6c2d203841f4e99ba3e9274b99959552283744729809c93a040db3f31eb9c7d [INFO] running `Command { std: "docker" "start" "-a" "c6c2d203841f4e99ba3e9274b99959552283744729809c93a040db3f31eb9c7d", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] skipping non-2021 edition `2018` [INFO] running `Command { std: "docker" "inspect" "c6c2d203841f4e99ba3e9274b99959552283744729809c93a040db3f31eb9c7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c6c2d203841f4e99ba3e9274b99959552283744729809c93a040db3f31eb9c7d", kill_on_drop: false }` [INFO] [stdout] c6c2d203841f4e99ba3e9274b99959552283744729809c93a040db3f31eb9c7d