[INFO] fetching crate msc 0.5.4...
[INFO] checking msc-0.5.4 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate msc 0.5.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate msc 0.5.4 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msc 0.5.4
[INFO] finished tweaking crates.io crate msc 0.5.4
[INFO] tweaked toml for crates.io crate msc 0.5.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 552e4182e3bfdb23cf135cfc6228c6b44faa58045436af7a57decf94a9b6f345
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "552e4182e3bfdb23cf135cfc6228c6b44faa58045436af7a57decf94a9b6f345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "552e4182e3bfdb23cf135cfc6228c6b44faa58045436af7a57decf94a9b6f345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "552e4182e3bfdb23cf135cfc6228c6b44faa58045436af7a57decf94a9b6f345", kill_on_drop: false }`
[INFO] [stdout] 552e4182e3bfdb23cf135cfc6228c6b44faa58045436af7a57decf94a9b6f345
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c43cd564c3302273b71ac97ec412b470e154e0b7fe67cc91400d3230197fa76
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c43cd564c3302273b71ac97ec412b470e154e0b7fe67cc91400d3230197fa76", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking msc v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/mscb_file/writer.rs:346:28
[INFO] [stdout]     |
[INFO] [stdout] 346 | impl<T> WriteImpl for &mut Iterator<Item=T> where T: WriteImpl, {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/mscb_file/writer.rs:346:28
[INFO] [stdout]     |
[INFO] [stdout] 346 | impl<T> WriteImpl for &mut Iterator<Item=T> where T: WriteImpl, {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` 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 [unoptimized + debuginfo] target(s) in 5.08s
[INFO] running `Command { std: "docker" "inspect" "6c43cd564c3302273b71ac97ec412b470e154e0b7fe67cc91400d3230197fa76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c43cd564c3302273b71ac97ec412b470e154e0b7fe67cc91400d3230197fa76", kill_on_drop: false }`
[INFO] [stdout] 6c43cd564c3302273b71ac97ec412b470e154e0b7fe67cc91400d3230197fa76