[INFO] fetching crate lc3dbg 1.2.2... [INFO] checking lc3dbg-1.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate lc3dbg 1.2.2 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate lc3dbg 1.2.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate lc3dbg 1.2.2 [INFO] finished tweaking crates.io crate lc3dbg 1.2.2 [INFO] tweaked toml for crates.io crate lc3dbg 1.2.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate crates.io crate lc3dbg 1.2.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pretty-bytes v0.2.2 [INFO] [stderr] Downloaded syn v0.15.33 [INFO] [stderr] Downloaded getopts v0.2.19 [INFO] [stderr] Downloaded arraydeque v0.4.5 [INFO] [stderr] Downloaded bitflags v1.0.5 [INFO] [stderr] Downloaded rustc-demangle v0.1.14 [INFO] [stderr] Downloaded libc v0.2.54 [INFO] [stderr] Downloaded cc v1.0.36 [INFO] [stderr] Downloaded lc3-rs v0.4.1 [INFO] [stderr] Downloaded proc-macro2 v0.4.29 [INFO] [stderr] Downloaded backtrace v0.3.15 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7b9c7864b94771b45af3eefd863d6cca4ff0f179f4b0d82af7e3cd86230e6d9f [INFO] running `Command { std: "docker" "start" "-a" "7b9c7864b94771b45af3eefd863d6cca4ff0f179f4b0d82af7e3cd86230e6d9f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7b9c7864b94771b45af3eefd863d6cca4ff0f179f4b0d82af7e3cd86230e6d9f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b9c7864b94771b45af3eefd863d6cca4ff0f179f4b0d82af7e3cd86230e6d9f", kill_on_drop: false }` [INFO] [stdout] 7b9c7864b94771b45af3eefd863d6cca4ff0f179f4b0d82af7e3cd86230e6d9f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 80bc53c9781f7b7ad03d0012ce83e91131c09bf23bf16df9dfada94647ac2255 [INFO] running `Command { std: "docker" "start" "-a" "80bc53c9781f7b7ad03d0012ce83e91131c09bf23bf16df9dfada94647ac2255", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v0.4.29 [INFO] [stderr] Compiling cc v1.0.36 [INFO] [stderr] Compiling syn v0.15.33 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Compiling arraydeque v0.4.5 [INFO] [stderr] Checking lock_api v0.2.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking rustc-demangle v0.1.14 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Compiling backtrace v0.3.15 [INFO] [stderr] Checking regex-syntax v0.6.6 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking getopts v0.2.19 [INFO] [stderr] Checking lc3-rs v0.4.1 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking clicolors-control v1.0.0 [INFO] [stderr] Checking termios v0.3.1 [INFO] [stderr] Checking pretty-bytes v0.2.2 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling synstructure v0.10.1 [INFO] [stderr] Checking console v0.7.5 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking lc3dbg v1.2.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/helper.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/helper.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/symbol.rs:99:29 [INFO] [stdout] | [INFO] [stdout] 99 | let splits = instruction.clone().split(" ").collect::>(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/symbol.rs:99:29 [INFO] [stdout] | [INFO] [stdout] 99 | let splits = instruction.clone().split(" ").collect::>(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.21s [INFO] running `Command { std: "docker" "inspect" "80bc53c9781f7b7ad03d0012ce83e91131c09bf23bf16df9dfada94647ac2255", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80bc53c9781f7b7ad03d0012ce83e91131c09bf23bf16df9dfada94647ac2255", kill_on_drop: false }` [INFO] [stdout] 80bc53c9781f7b7ad03d0012ce83e91131c09bf23bf16df9dfada94647ac2255 [INFO] checking lc3dbg-1.2.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate lc3dbg 1.2.2 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate lc3dbg 1.2.2 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate lc3dbg 1.2.2 [INFO] finished tweaking crates.io crate lc3dbg 1.2.2 [INFO] tweaked toml for crates.io crate lc3dbg 1.2.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate crates.io crate lc3dbg 1.2.2 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 906a7b19563fa087b8452840f1001289869cb89ce3a5669247f511790c061502 [INFO] running `Command { std: "docker" "start" "-a" "906a7b19563fa087b8452840f1001289869cb89ce3a5669247f511790c061502", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "906a7b19563fa087b8452840f1001289869cb89ce3a5669247f511790c061502", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "906a7b19563fa087b8452840f1001289869cb89ce3a5669247f511790c061502", kill_on_drop: false }` [INFO] [stdout] 906a7b19563fa087b8452840f1001289869cb89ce3a5669247f511790c061502 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 96fdb634ddaa0c21e62c912447e99f80c889cd0be2617e884fb6488e86dc7e36 [INFO] running `Command { std: "docker" "start" "-a" "96fdb634ddaa0c21e62c912447e99f80c889cd0be2617e884fb6488e86dc7e36", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v0.4.29 [INFO] [stderr] Compiling syn v0.15.33 [INFO] [stderr] Compiling cc v1.0.36 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Compiling arraydeque v0.4.5 [INFO] [stderr] Checking rustc-demangle v0.1.14 [INFO] [stderr] Checking lock_api v0.2.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.6 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling backtrace v0.3.15 [INFO] [stderr] Checking getopts v0.2.19 [INFO] [stderr] Checking lc3-rs v0.4.1 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking clicolors-control v1.0.0 [INFO] [stderr] Checking termios v0.3.1 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking pretty-bytes v0.2.2 [INFO] [stderr] Checking console v0.7.5 [INFO] [stderr] Compiling synstructure v0.10.1 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking lc3dbg v1.2.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/helper.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/helper.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/symbol.rs:99:29 [INFO] [stdout] | [INFO] [stdout] 99 | let splits = instruction.clone().split(" ").collect::>(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/symbol.rs:99:29 [INFO] [stdout] | [INFO] [stdout] 99 | let splits = instruction.clone().split(" ").collect::>(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.15s [INFO] running `Command { std: "docker" "inspect" "96fdb634ddaa0c21e62c912447e99f80c889cd0be2617e884fb6488e86dc7e36", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "96fdb634ddaa0c21e62c912447e99f80c889cd0be2617e884fb6488e86dc7e36", kill_on_drop: false }` [INFO] [stdout] 96fdb634ddaa0c21e62c912447e99f80c889cd0be2617e884fb6488e86dc7e36