[INFO] fetching crate specs-mirror 0.5.0...
[INFO] checking specs-mirror-0.5.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate specs-mirror 0.5.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate specs-mirror 0.5.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate specs-mirror 0.5.0
[INFO] finished tweaking crates.io crate specs-mirror 0.5.0
[INFO] tweaked toml for crates.io crate specs-mirror 0.5.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 30 packages
[INFO] [stderr]       Adding arrayvec v0.4.12 (latest: v0.7.4)
[INFO] [stderr]       Adding atom v0.3.6 (latest: v0.4.0)
[INFO] [stderr]       Adding crossbeam v0.3.2 (latest: v0.8.4)
[INFO] [stderr]       Adding derivative v1.0.4 (latest: v2.2.0)
[INFO] [stderr]       Adding hibitset v0.5.4 (latest: v0.6.4)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding shred v0.7.2 (latest: v0.16.0)
[INFO] [stderr]       Adding shred-derive v0.5.1 (latest: v0.7.0)
[INFO] [stderr]       Adding smallvec v0.6.14 (latest: v1.13.2)
[INFO] [stderr]       Adding specs v0.12.3 (latest: v0.20.0)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding tuple_utils v0.2.0 (latest: v0.4.0)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shred v0.7.2
[INFO] [stderr]   Downloaded shred-derive v0.5.1
[INFO] [stderr]   Downloaded tuple_utils v0.2.0
[INFO] [stderr]   Downloaded hibitset v0.5.4
[INFO] [stderr]   Downloaded atom v0.3.6
[INFO] [stderr]   Downloaded derivative v1.0.4
[INFO] [stderr]   Downloaded crossbeam v0.3.2
[INFO] [stderr]   Downloaded specs v0.12.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61bca248caa0ca381a493cc0f46be38a0af8abe6869095b8775bc8c5a1589fdf
[INFO] running `Command { std: "docker" "start" "-a" "61bca248caa0ca381a493cc0f46be38a0af8abe6869095b8775bc8c5a1589fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61bca248caa0ca381a493cc0f46be38a0af8abe6869095b8775bc8c5a1589fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61bca248caa0ca381a493cc0f46be38a0af8abe6869095b8775bc8c5a1589fdf", kill_on_drop: false }`
[INFO] [stdout] 61bca248caa0ca381a493cc0f46be38a0af8abe6869095b8775bc8c5a1589fdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1e64533bc4354fb60addff57df457a4f1efe60dee8ab6490988901918efb32e
[INFO] running `Command { std: "docker" "start" "-a" "f1e64533bc4354fb60addff57df457a4f1efe60dee8ab6490988901918efb32e", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking atom v0.3.6
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking shrev v1.1.3
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling shred-derive v0.5.1
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking shred v0.7.2
[INFO] [stderr]     Checking hibitset v0.5.4
[INFO] [stderr]     Checking specs v0.12.3
[INFO] [stderr]     Checking specs-mirror v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ReaderId` is imported redundantly
[INFO] [stdout]   --> examples/cassowary.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | use shrev::{EventChannel, ReaderId};
[INFO] [stdout]    |                           ^^^^^^^^
[INFO] [stdout] 13 | use specs::prelude::*;
[INFO] [stdout]    |     ----------------- the item `ReaderId` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ReaderId` is imported redundantly
[INFO] [stdout]  --> tests/mirror.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | use shrev::{EventChannel, ReaderId};
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout] 6 | use specs::prelude::*;
[INFO] [stdout]   |     ----------------- the item `ReaderId` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `Command { std: "docker" "inspect" "f1e64533bc4354fb60addff57df457a4f1efe60dee8ab6490988901918efb32e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1e64533bc4354fb60addff57df457a4f1efe60dee8ab6490988901918efb32e", kill_on_drop: false }`
[INFO] [stdout] f1e64533bc4354fb60addff57df457a4f1efe60dee8ab6490988901918efb32e