[INFO] fetching crate alert-after 1.5.1...
[INFO] checking alert-after-1.5.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate alert-after 1.5.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate alert-after 1.5.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alert-after 1.5.1
[INFO] finished tweaking crates.io crate alert-after 1.5.1
[INFO] tweaked toml for crates.io crate alert-after 1.5.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dbus v0.6.5
[INFO] [stderr]   Downloaded mac-notification-sys v0.3.0
[INFO] [stderr]   Downloaded notify-rust v3.6.3
[INFO] [stderr]   Downloaded mac-notification-sys v0.2.0
[INFO] [stderr]   Downloaded notifica v1.0.2
[INFO] [stderr]   Downloaded winrt v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ecb0bb6a5be17c4e3162856f5bc289423f89a2212c58371a3470cba68e1fa94
[INFO] running `Command { std: "docker" "start" "-a" "4ecb0bb6a5be17c4e3162856f5bc289423f89a2212c58371a3470cba68e1fa94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ecb0bb6a5be17c4e3162856f5bc289423f89a2212c58371a3470cba68e1fa94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecb0bb6a5be17c4e3162856f5bc289423f89a2212c58371a3470cba68e1fa94", kill_on_drop: false }`
[INFO] [stdout] 4ecb0bb6a5be17c4e3162856f5bc289423f89a2212c58371a3470cba68e1fa94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdd9f734d654822868e0b0fdd48ae9b0dedda4660077d0d060c7e12256428a2a
[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" "cdd9f734d654822868e0b0fdd48ae9b0dedda4660077d0d060c7e12256428a2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]     Checking dbus v0.6.5
[INFO] [stderr]     Checking notify-rust v3.6.3
[INFO] [stderr]     Checking notifica v1.0.2
[INFO] [stderr]     Checking alert-after v1.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> main.rs:16:65
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn spawn_command(args: &[String]) -> Result<process::Child, Box<error::Error>> {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> main.rs:28:69
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn first_arg_as_program_name(args: &[String]) -> Result<String, Box<error::Error>> {
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> main.rs:16:65
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn spawn_command(args: &[String]) -> Result<process::Child, Box<error::Error>> {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> main.rs:28:69
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn first_arg_as_program_name(args: &[String]) -> Result<String, Box<error::Error>> {
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> main.rs:34:42
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn alert_after() -> Result<ExitCode, Box<error::Error>> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> main.rs:34:42
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn alert_after() -> Result<ExitCode, Box<error::Error>> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.72s
[INFO] running `Command { std: "docker" "inspect" "cdd9f734d654822868e0b0fdd48ae9b0dedda4660077d0d060c7e12256428a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdd9f734d654822868e0b0fdd48ae9b0dedda4660077d0d060c7e12256428a2a", kill_on_drop: false }`
[INFO] [stdout] cdd9f734d654822868e0b0fdd48ae9b0dedda4660077d0d060c7e12256428a2a