[INFO] cloning repository https://github.com/Diadlo/mp4_reader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Diadlo/mp4_reader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDiadlo%2Fmp4_reader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDiadlo%2Fmp4_reader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 590a539c7b5119f9c8824c47cb5a5de0ddd85eac
[INFO] checking Diadlo/mp4_reader against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDiadlo%2Fmp4_reader" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Diadlo/mp4_reader on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Diadlo/mp4_reader
[INFO] finished tweaking git repo https://github.com/Diadlo/mp4_reader
[INFO] tweaked toml for git repo https://github.com/Diadlo/mp4_reader written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Diadlo/mp4_reader already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b0c7e13c64d5960e3d5802538001fbe48b4b46e4419548e0a999c90fa08c4f8
[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" "0b0c7e13c64d5960e3d5802538001fbe48b4b46e4419548e0a999c90fa08c4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b0c7e13c64d5960e3d5802538001fbe48b4b46e4419548e0a999c90fa08c4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b0c7e13c64d5960e3d5802538001fbe48b4b46e4419548e0a999c90fa08c4f8", kill_on_drop: false }`
[INFO] [stdout] 0b0c7e13c64d5960e3d5802538001fbe48b4b46e4419548e0a999c90fa08c4f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7f42f35e42951ac609dd957a83fe5c7dac98de5061f316886e261a79d6bafdf4
[INFO] running `Command { std: "docker" "start" "-a" "7f42f35e42951ac609dd957a83fe5c7dac98de5061f316886e261a79d6bafdf4", kill_on_drop: false }`
[INFO] [stderr]     Checking mp4_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/atom.rs:98:20
[INFO] [stdout]    |
[INFO] [stdout] 98 |     atoms: Vec<Box<Atom>>,
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Atom`
[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]    --> src/atom.rs:110:48
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn set_atoms(&mut self, atoms: Vec<Box<Atom>>) {
[INFO] [stdout]     |                                                ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:15:40
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn read_atom(buf: &[u8]) -> Option<Box<Atom>> {
[INFO] [stdout]    |                                        ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let atom_box: Box<Atom> = match atom_name.as_ref() {
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn read_atoms(mut buf: &[u8]) -> Vec<Box<Atom>> {
[INFO] [stdout]    |                                          ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:59:40
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn read_mp4(buf: &[u8]) -> Vec<Box<Atom>> {
[INFO] [stdout]    |                                        ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/atom.rs:98:20
[INFO] [stdout]    |
[INFO] [stdout] 98 |     atoms: Vec<Box<Atom>>,
[INFO] [stdout]    |                    ^^^^ help: use `dyn`: `dyn Atom`
[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]    --> src/atom.rs:110:48
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn set_atoms(&mut self, atoms: Vec<Box<Atom>>) {
[INFO] [stdout]     |                                                ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:15:40
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn read_atom(buf: &[u8]) -> Option<Box<Atom>> {
[INFO] [stdout]    |                                        ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let atom_box: Box<Atom> = match atom_name.as_ref() {
[INFO] [stdout]    |                       ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn read_atoms(mut buf: &[u8]) -> Vec<Box<Atom>> {
[INFO] [stdout]    |                                          ^^^^ help: use `dyn`: `dyn Atom`
[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]   --> src/reader.rs:59:40
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn read_mp4(buf: &[u8]) -> Vec<Box<Atom>> {
[INFO] [stdout]    |                                        ^^^^ help: use `dyn`: `dyn Atom`
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "7f42f35e42951ac609dd957a83fe5c7dac98de5061f316886e261a79d6bafdf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f42f35e42951ac609dd957a83fe5c7dac98de5061f316886e261a79d6bafdf4", kill_on_drop: false }`
[INFO] [stdout] 7f42f35e42951ac609dd957a83fe5c7dac98de5061f316886e261a79d6bafdf4